61165023947088 has 160 divisors (see below), whose sum is σ = 164609885459712. Its totient is φ = 19553940172800.

The previous prime is 61165023947059. The next prime is 61165023947177. The reversal of 61165023947088 is 88074932056116.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213902706 + ... + 214188462.

It is a 1-persistent number, because it is pandigital, but 2⋅61165023947088 = 122330047894176 is not.

Almost surely, 2^{61165023947088} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61165023947088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82304942729856).

61165023947088 is an abundant number, since it is smaller than the sum of its proper divisors (103444861512624).

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

61165023947088 is a wasteful number, since it uses less digits than its factorization.

61165023947088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287653 (or 287647 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 61165023947088 in words is "sixty-one trillion, one hundred sixty-five billion, twenty-three million, nine hundred forty-seven thousand, eighty-eight".