6666360415 has 16 divisors (see below), whose sum is σ = 9398170656. Its totient is φ = 4475318400.

The previous prime is 6666360409. The next prime is 6666360419. The reversal of 6666360415 is 5140636666.

It is not a de Polignac number, because 6666360415 - 2¹⁹ = 6665836127 is a prime.

It is a super-2 number, since 2×6666360415² = 88880722365357944450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666360419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4661076 + ... + 4662505.

It is an arithmetic number, because the mean of its divisors is an integer number (587385666).

Almost surely, 2^6666360415 is an apocalyptic number.

6666360415 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6666360415 is a deficient number, since it is larger than the sum of its proper divisors (2731810241).

6666360415 is a wasteful number, since it uses less digits than its factorization.

6666360415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9323610.

The product of its (nonzero) digits is 466560, while the sum is 43.

The square root of 6666360415 is about 81647.7826704437. The cubic root of 6666360415 is about 1882.0432379355.

The spelling of 6666360415 in words is "six billion, six hundred sixty-six million, three hundred sixty thousand, four hundred fifteen".