51011540124 has 24 divisors (see below), whose sum is σ = 119036080128. Its totient is φ = 17002539120.

The previous prime is 51011540089. The next prime is 51011540137. The reversal of 51011540124 is 42104511015.

It is a junction number, because it is equal to n+sod(n) for n = 51011540094 and 51011540103.

It is a congruent number.

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, 6139 + ... + 319469.

It is an arithmetic number, because the mean of its divisors is an integer number (4959836672).

Almost surely, 2^51011540124 is an apocalyptic number.

It is an amenable number.

51011540124 is an abundant number, since it is smaller than the sum of its proper divisors (68024540004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51011540124 is a wasteful number, since it uses less digits than its factorization.

51011540124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326905 (or 326903 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The spelling of 51011540124 in words is "fifty-one billion, eleven million, five hundred forty thousand, one hundred twenty-four".