51476142761 has 2 divisors, whose sum is σ = 51476142762. Its totient is φ = 51476142760.

The previous prime is 51476142733. The next prime is 51476142779. The reversal of 51476142761 is 16724167415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50509865536 + 966277225 = 224744^2 + 31085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51476142761 is a prime.

It is not a weakly prime, because it can be changed into another prime (51476142701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25738071380 + 25738071381.

It is an arithmetic number, because the mean of its divisors is an integer number (25738071381).

Almost surely, 2^51476142761 is an apocalyptic number.

It is an amenable number.

51476142761 is a deficient number, since it is larger than the sum of its proper divisors (1).

51476142761 is an equidigital number, since it uses as much as digits as its factorization.

51476142761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 44.

The spelling of 51476142761 in words is "fifty-one billion, four hundred seventy-six million, one hundred forty-two thousand, seven hundred sixty-one".