51206555016 has 96 divisors (see below), whose sum is σ = 139152686400. Its totient is φ = 17011347840.

The previous prime is 51206554999. The next prime is 51206555041. The reversal of 51206555016 is 61055560215.

It is a super-2 number, since 2×51206555016² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52735411 + ... + 52736381.

It is an arithmetic number, because the mean of its divisors is an integer number (1449507150).

Almost surely, 2^51206555016 is an apocalyptic number.

It is an amenable number.

51206555016 is an abundant number, since it is smaller than the sum of its proper divisors (87946131384).

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

51206555016 is a wasteful number, since it uses less digits than its factorization.

51206555016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699 (or 2692 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 51206555016 in words is "fifty-one billion, two hundred six million, five hundred fifty-five thousand, sixteen".