61256125678 has 32 divisors (see below), whose sum is σ = 100784331648. Its totient is φ = 27692143200.

The previous prime is 61256125627. The next prime is 61256125717. The reversal of 61256125678 is 87652165216.

61256125678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3144408 + ... + 3163828.

It is an arithmetic number, because the mean of its divisors is an integer number (3149510364).

Almost surely, 2^61256125678 is an apocalyptic number.

61256125678 is a deficient number, since it is larger than the sum of its proper divisors (39528205970).

61256125678 is a wasteful number, since it uses less digits than its factorization.

61256125678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20208.

The product of its digits is 1209600, while the sum is 49.

The spelling of 61256125678 in words is "sixty-one billion, two hundred fifty-six million, one hundred twenty-five thousand, six hundred seventy-eight".