51455524640065 has 16 divisors (see below), whose sum is σ = 75995851776768. Its totient is φ = 32569650760896.

The previous prime is 51455524640041. The next prime is 51455524640119. The reversal of 51455524640065 is 56004642555415.

It is a cyclic number.

It is not a de Polignac number, because 51455524640065 - 2⁵ = 51455524640033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51455524639994 and 51455524640021.

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, 56544532117 + ... + 56544533026.

It is an arithmetic number, because the mean of its divisors is an integer number (4749740736048).

Almost surely, 2^{51455524640065} is an apocalyptic number.

It is an amenable number.

51455524640065 is a deficient number, since it is larger than the sum of its proper divisors (24540327136703).

51455524640065 is a wasteful number, since it uses less digits than its factorization.

51455524640065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113089065168.

The product of its (nonzero) digits is 14400000, while the sum is 52.

The spelling of 51455524640065 in words is "fifty-one trillion, four hundred fifty-five billion, five hundred twenty-four million, six hundred forty thousand, sixty-five".