61165601560 has 64 divisors (see below), whose sum is σ = 157788933120. Its totient is φ = 20903602560.

The previous prime is 61165601543. The next prime is 61165601573. The reversal of 61165601560 is 6510656116.

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, 264124 + ... + 438283.

It is an arithmetic number, because the mean of its divisors is an integer number (2465452080).

Almost surely, 2^61165601560 is an apocalyptic number.

It is an amenable number.

61165601560 is an abundant number, since it is smaller than the sum of its proper divisors (96623331560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61165601560 is a wasteful number, since it uses less digits than its factorization.

61165601560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702736 (or 702732 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 61165601560 in words is "sixty-one billion, one hundred sixty-five million, six hundred one thousand, five hundred sixty".