51455315555 has 16 divisors (see below), whose sum is σ = 71122944000. Its totient is φ = 35005817952.

The previous prime is 51455315533. The next prime is 51455315581. The reversal of 51455315555 is 55551355415.

It is not a de Polignac number, because 51455315555 - 2²⁴ = 51438538339 is a prime.

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, 5783555 + ... + 5792444.

It is an arithmetic number, because the mean of its divisors is an integer number (4445184000).

Almost surely, 2^51455315555 is an apocalyptic number.

51455315555 is a deficient number, since it is larger than the sum of its proper divisors (19667628445).

51455315555 is a wasteful number, since it uses less digits than its factorization.

51455315555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11576138.

The product of its digits is 937500, while the sum is 44.

The spelling of 51455315555 in words is "fifty-one billion, four hundred fifty-five million, three hundred fifteen thousand, five hundred fifty-five".