61115522056656 has 80 divisors (see below), whose sum is σ = 158069403744000. Its totient is φ = 20347634571264.

The previous prime is 61115522056637. The next prime is 61115522056661. The reversal of 61115522056656 is 65665022551116.

61115522056656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61115522056599 and 61115522056608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392067820 + ... + 392223668.

It is an arithmetic number, because the mean of its divisors is an integer number (1975867546800).

Almost surely, 2^{61115522056656} is an apocalyptic number.

It is an amenable number.

61115522056656 is an abundant number, since it is smaller than the sum of its proper divisors (96953881687344).

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

61115522056656 is a wasteful number, since it uses less digits than its factorization.

61115522056656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165516 (or 165510 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 51.

The spelling of 61115522056656 in words is "sixty-one trillion, one hundred fifteen billion, five hundred twenty-two million, fifty-six thousand, six hundred fifty-six".