51494725774 has 8 divisors (see below), whose sum is σ = 77753626128. Its totient is φ = 25576850400.

The previous prime is 51494725739. The next prime is 51494725801. The reversal of 51494725774 is 47752749415.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85255867 + ... + 85256470.

It is an arithmetic number, because the mean of its divisors is an integer number (9719203266).

Almost surely, 2^51494725774 is an apocalyptic number.

51494725774 is a deficient number, since it is larger than the sum of its proper divisors (26258900354).

51494725774 is a wasteful number, since it uses less digits than its factorization.

51494725774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170512490.

The product of its digits is 9878400, while the sum is 55.

The spelling of 51494725774 in words is "fifty-one billion, four hundred ninety-four million, seven hundred twenty-five thousand, seven hundred seventy-four".