51660611051 has 16 divisors (see below), whose sum is σ = 62199532800. Its totient is φ = 41915255328.

The previous prime is 51660611027. The next prime is 51660611069. The reversal of 51660611051 is 15011606615.

It is a cyclic number.

It is not a de Polignac number, because 51660611051 - 2⁶ = 51660610987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51660610999 and 51660611017.

It is not an unprimeable number, because it can be changed into a prime (51660611011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1220 + ... + 321438.

It is an arithmetic number, because the mean of its divisors is an integer number (3887470800).

Almost surely, 2^51660611051 is an apocalyptic number.

51660611051 is a deficient number, since it is larger than the sum of its proper divisors (10538921749).

51660611051 is a wasteful number, since it uses less digits than its factorization.

51660611051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321458.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 51660611051 in words is "fifty-one billion, six hundred sixty million, six hundred eleven thousand, fifty-one".