51102660840 has 192 divisors, whose sum is σ = 192585617280. Its totient is φ = 10618713600.

The previous prime is 51102660823. The next prime is 51102660853. The reversal of 51102660840 is 4806620115.

It is a super-2 number, since 2×51102660840² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 149751 + ... + 353030.

It is an arithmetic number, because the mean of its divisors is an integer number (1003050090).

Almost surely, 2^51102660840 is an apocalyptic number.

It is an amenable number.

51102660840 is an abundant number, since it is smaller than the sum of its proper divisors (141482956440).

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

51102660840 is a wasteful number, since it uses less digits than its factorization.

51102660840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502824 (or 502809 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 51102660840 in words is "fifty-one billion, one hundred two million, six hundred sixty thousand, eight hundred forty".