51111060555506 has 16 divisors (see below), whose sum is σ = 87743952354240. Its totient is φ = 21873492387600.

The previous prime is 51111060555437. The next prime is 51111060555523. The reversal of 51111060555506 is 60555506011115.

It is a super-2 number, since 2×51111060555506² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2603977376 + ... + 2603997003.

It is an arithmetic number, because the mean of its divisors is an integer number (5483997022140).

Almost surely, 2^{51111060555506} is an apocalyptic number.

51111060555506 is a deficient number, since it is larger than the sum of its proper divisors (36632891798734).

51111060555506 is a wasteful number, since it uses less digits than its factorization.

51111060555506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5207975089.

The product of its (nonzero) digits is 112500, while the sum is 41.

The spelling of 51111060555506 in words is "fifty-one trillion, one hundred eleven billion, sixty million, five hundred fifty-five thousand, five hundred six".