2661493367 has 4 divisors (see below), whose sum is σ = 2866223640. Its totient is φ = 2456763096.

The previous prime is 2661493339. The next prime is 2661493391. The reversal of 2661493367 is 7633941662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661493367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661499367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102365117 + ... + 102365142.

It is an arithmetic number, because the mean of its divisors is an integer number (716555910).

Almost surely, 2^2661493367 is an apocalyptic number.

2661493367 is a deficient number, since it is larger than the sum of its proper divisors (204730273).

2661493367 is a wasteful number, since it uses less digits than its factorization.

2661493367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204730272.

The product of its digits is 979776, while the sum is 47.

The square root of 2661493367 is about 51589.6633735868. The cubic root of 2661493367 is about 1385.8252267741.

The spelling of 2661493367 in words is "two billion, six hundred sixty-one million, four hundred ninety-three thousand, three hundred sixty-seven".