51029770982 has 4 divisors (see below), whose sum is σ = 76544656476. Its totient is φ = 25514885490.

The previous prime is 51029770973. The next prime is 51029771017. The reversal of 51029770982 is 28907792015.

51029770982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28907792015 = 5 ⋅5781558403.

It is a self number, because there is not a number n which added to its sum of digits gives 51029770982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12757442744 + ... + 12757442747.

It is an arithmetic number, because the mean of its divisors is an integer number (19136164119).

Almost surely, 2^51029770982 is an apocalyptic number.

51029770982 is a deficient number, since it is larger than the sum of its proper divisors (25514885494).

51029770982 is a wasteful number, since it uses less digits than its factorization.

51029770982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25514885493.

The product of its (nonzero) digits is 635040, while the sum is 50.

The spelling of 51029770982 in words is "fifty-one billion, twenty-nine million, seven hundred seventy thousand, nine hundred eighty-two".