51183139740 has 48 divisors (see below), whose sum is σ = 150855573120. Its totient is φ = 12930477120.

The previous prime is 51183139729. The next prime is 51183139751. The reversal of 51183139740 is 4793138115.

It is an interprime number because it is at equal distance from previous prime (51183139729) and next prime (51183139751).

It is a junction number, because it is equal to n+sod(n) for n = 51183139692 and 51183139701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22447606 + ... + 22449885.

It is an arithmetic number, because the mean of its divisors is an integer number (3142824440).

Almost surely, 2^51183139740 is an apocalyptic number.

It is an amenable number.

51183139740 is an abundant number, since it is smaller than the sum of its proper divisors (99672433380).

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

51183139740 is a wasteful number, since it uses less digits than its factorization.

51183139740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44897522 (or 44897520 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 51183139740 in words is "fifty-one billion, one hundred eighty-three million, one hundred thirty-nine thousand, seven hundred forty".