51774636051 has 16 divisors (see below), whose sum is σ = 76708437120. Its totient is φ = 34514051400.

The previous prime is 51774636031. The next prime is 51774636073. The reversal of 51774636051 is 15063647715.

51774636051 is a `hidden beast` number, since 5 + 1 + 7 + 7 + 4 + 636 + 0 + 5 + 1 = 666.

It is not a de Polignac number, because 51774636051 - 2¹⁴ = 51774619667 is a prime.

It is a super-2 number, since 2×51774636051² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 51774635988 and 51774636006.

It is not an unprimeable number, because it can be changed into a prime (51774636031) 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, 391996 + ... + 507158.

It is an arithmetic number, because the mean of its divisors is an integer number (4794277320).

Almost surely, 2^51774636051 is an apocalyptic number.

51774636051 is a deficient number, since it is larger than the sum of its proper divisors (24933801069).

51774636051 is a wasteful number, since it uses less digits than its factorization.

51774636051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131823 (or 131817 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 51774636051 in words is "fifty-one billion, seven hundred seventy-four million, six hundred thirty-six thousand, fifty-one".