61054125978 has 16 divisors (see below), whose sum is σ = 122110729056. Its totient is φ = 20350962480.

The previous prime is 61054125929. The next prime is 61054125989. The reversal of 61054125978 is 87952145016.

It is a happy number.

61054125978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 425700 + ... + 550752.

It is an arithmetic number, because the mean of its divisors is an integer number (7631920566).

Almost surely, 2^61054125978 is an apocalyptic number.

61054125978 is an abundant number, since it is smaller than the sum of its proper divisors (61056603078).

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

61054125978 is a wasteful number, since it uses less digits than its factorization.

61054125978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206429.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 61054125978 in words is "sixty-one billion, fifty-four million, one hundred twenty-five thousand, nine hundred seventy-eight".