51051111055580 has 48 divisors (see below), whose sum is σ = 107336990799360. Its totient is φ = 20395762555200.

The previous prime is 51051111055489. The next prime is 51051111055591. The reversal of 51051111055580 is 8555011115015.

It is a super-3 number, since 3×51051111055580³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54871511 + ... + 55794129.

It is an arithmetic number, because the mean of its divisors is an integer number (2236187308320).

Almost surely, 2^{51051111055580} is an apocalyptic number.

It is an amenable number.

51051111055580 is an abundant number, since it is smaller than the sum of its proper divisors (56285879743780).

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

51051111055580 is a wasteful number, since it uses less digits than its factorization.

51051111055580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925970 (or 925968 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 38.

The spelling of 51051111055580 in words is "fifty-one trillion, fifty-one billion, one hundred eleven million, fifty-five thousand, five hundred eighty".