51466740737 has 4 divisors (see below), whose sum is σ = 51468246996. Its totient is φ = 51465234480.

The previous prime is 51466740707. The next prime is 51466740757. The reversal of 51466740737 is 73704766415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27983936656 + 23482804081 = 167284^2 + 153241^2 .

It is a cyclic number.

It is not a de Polignac number, because 51466740737 - 2²⁸ = 51198305281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51466740707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700658 + ... + 770619.

It is an arithmetic number, because the mean of its divisors is an integer number (12867061749).

Almost surely, 2^51466740737 is an apocalyptic number.

It is an amenable number.

51466740737 is a deficient number, since it is larger than the sum of its proper divisors (1506259).

51466740737 is a wasteful number, since it uses less digits than its factorization.

51466740737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506258.

The product of its (nonzero) digits is 2963520, while the sum is 50.

The spelling of 51466740737 in words is "fifty-one billion, four hundred sixty-six million, seven hundred forty thousand, seven hundred thirty-seven".