61111164928 has 56 divisors (see below), whose sum is σ = 133325509320. Its totient is φ = 27777761280.

The previous prime is 61111164899. The next prime is 61111164941. The reversal of 61111164928 is 82946111116.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248973 + ... + 429196.

Almost surely, 2^61111164928 is an apocalyptic number.

It is an amenable number.

61111164928 is an abundant number, since it is smaller than the sum of its proper divisors (72214344392).

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

61111164928 is an equidigital number, since it uses as much as digits as its factorization.

61111164928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678206 (or 678182 counting only the distinct ones).

The product of its digits is 20736, while the sum is 40.

The spelling of 61111164928 in words is "sixty-one billion, one hundred eleven million, one hundred sixty-four thousand, nine hundred twenty-eight".