51925787906 has 16 divisors (see below), whose sum is σ = 79554144384. Its totient is φ = 25407854544.

The previous prime is 51925787863. The next prime is 51925787923. The reversal of 51925787906 is 60978752915.

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, 1129241 + ... + 1174323.

It is an arithmetic number, because the mean of its divisors is an integer number (4972134024).

Almost surely, 2^51925787906 is an apocalyptic number.

51925787906 is a deficient number, since it is larger than the sum of its proper divisors (27628356478).

51925787906 is a wasteful number, since it uses less digits than its factorization.

51925787906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57385.

The product of its (nonzero) digits is 9525600, while the sum is 59.

The spelling of 51925787906 in words is "fifty-one billion, nine hundred twenty-five million, seven hundred eighty-seven thousand, nine hundred six".