153661012 has 6 divisors (see below), whose sum is σ = 268906778. Its totient is φ = 76830504.

The previous prime is 153660979. The next prime is 153661019. The reversal of 153661012 is 210166351.

It can be written as a sum of positive squares in only one way, i.e., 153660816 + 196 = 12396^2 + 14^2 .

It is a super-2 number, since 2×153661012² = 47223413217728288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153661019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19207623 + ... + 19207630.

Almost surely, 2^153661012 is an apocalyptic number.

It is an amenable number.

153661012 is a deficient number, since it is larger than the sum of its proper divisors (115245766).

153661012 is a wasteful number, since it uses less digits than its factorization.

153661012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38415257 (or 38415255 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 153661012 is about 12396.0079057735. The cubic root of 153661012 is about 535.6172594346.

The spelling of 153661012 in words is "one hundred fifty-three million, six hundred sixty-one thousand, twelve".