51020535004 has 12 divisors (see below), whose sum is σ = 93985196200. Its totient is φ = 24167621808.

The previous prime is 51020534953. The next prime is 51020535019. The reversal of 51020535004 is 40053502015.

It is a self number, because there is not a number n which added to its sum of digits gives 51020535004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335661339 + ... + 335661490.

Almost surely, 2^51020535004 is an apocalyptic number.

It is an amenable number.

51020535004 is a deficient number, since it is larger than the sum of its proper divisors (42964661196).

51020535004 is a wasteful number, since it uses less digits than its factorization.

51020535004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671322852 (or 671322850 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The spelling of 51020535004 in words is "fifty-one billion, twenty million, five hundred thirty-five thousand, four".