51711071504 has 10 divisors (see below), whose sum is σ = 100190201070. Its totient is φ = 25855535744.

The previous prime is 51711071497. The next prime is 51711071543. The reversal of 51711071504 is 40517011715.

It can be written as a sum of positive squares in only one way, i.e., 50020217104 + 1690854400 = 223652^2 + 41120^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1615970969 + ... + 1615971000.

It is an arithmetic number, because the mean of its divisors is an integer number (10019020107).

Almost surely, 2^51711071504 is an apocalyptic number.

It is an amenable number.

51711071504 is a deficient number, since it is larger than the sum of its proper divisors (48479129566).

51711071504 is a wasteful number, since it uses less digits than its factorization.

51711071504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231941977 (or 3231941971 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 32.

The spelling of 51711071504 in words is "fifty-one billion, seven hundred eleven million, seventy-one thousand, five hundred four".