61016611651512 has 32 divisors (see below), whose sum is σ = 166408940868480. Its totient is φ = 18489882318560.

The previous prime is 61016611651487. The next prime is 61016611651529. The reversal of 61016611651512 is 21515611661016.

It is a super-2 number, since 2×61016611651512² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115561764228 + ... + 115561764755.

It is an arithmetic number, because the mean of its divisors is an integer number (5200279402140).

Almost surely, 2^{61016611651512} is an apocalyptic number.

It is an amenable number.

61016611651512 is an abundant number, since it is smaller than the sum of its proper divisors (105392329216968).

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

61016611651512 is a wasteful number, since it uses less digits than its factorization.

61016611651512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231123529003 (or 231123528999 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 42.

The spelling of 61016611651512 in words is "sixty-one trillion, sixteen billion, six hundred eleven million, six hundred fifty-one thousand, five hundred twelve".