51111550002 has 8 divisors (see below), whose sum is σ = 102223100016. Its totient is φ = 17037183332.

The previous prime is 51111549961. The next prime is 51111550037. The reversal of 51111550002 is 20005511115.

It is a sphenic number, since it is the product of 3 distinct primes.

51111550002 is an admirable number.

It is a super-2 number, since 2×51111550002² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4259295828 + ... + 4259295839.

It is an arithmetic number, because the mean of its divisors is an integer number (12777887502).

Almost surely, 2^51111550002 is an apocalyptic number.

51111550002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51111550002 is a wasteful number, since it uses less digits than its factorization.

51111550002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8518591672.

The product of its (nonzero) digits is 250, while the sum is 21.

The spelling of 51111550002 in words is "fifty-one billion, one hundred eleven million, five hundred fifty thousand, two".