51331700860 has 48 divisors (see below), whose sum is σ = 117832176000. Its totient is φ = 18628626240.

The previous prime is 51331700851. The next prime is 51331700869. The reversal of 51331700860 is 6800713315.

It is an interprime number because it is at equal distance from previous prime (51331700851) and next prime (51331700869).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51331700869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124014 + ... + 343573.

It is an arithmetic number, because the mean of its divisors is an integer number (2454837000).

Almost surely, 2^51331700860 is an apocalyptic number.

It is an amenable number.

51331700860 is an abundant number, since it is smaller than the sum of its proper divisors (66500475140).

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

51331700860 is a wasteful number, since it uses less digits than its factorization.

51331700860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468106 (or 468104 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 51331700860 in words is "fifty-one billion, three hundred thirty-one million, seven hundred thousand, eight hundred sixty".