61613432155256 has 64 divisors (see below), whose sum is σ = 119129557680000. Its totient is φ = 29852334864000.

The previous prime is 61613432155237. The next prime is 61613432155309. The reversal of 61613432155256 is 65255123431616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1285222535 + ... + 1285270473.

It is an arithmetic number, because the mean of its divisors is an integer number (1861399338750).

Almost surely, 2^{61613432155256} is an apocalyptic number.

It is an amenable number.

61613432155256 is a deficient number, since it is larger than the sum of its proper divisors (57516125524744).

61613432155256 is a wasteful number, since it uses less digits than its factorization.

61613432155256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65532 (or 65528 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 50.

The spelling of 61613432155256 in words is "sixty-one trillion, six hundred thirteen billion, four hundred thirty-two million, one hundred fifty-five thousand, two hundred fifty-six".