50507664761 has 2 divisors, whose sum is σ = 50507664762. Its totient is φ = 50507664760.

The previous prime is 50507664749. The next prime is 50507664763. The reversal of 50507664761 is 16746670505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48281712361 + 2225952400 = 219731^2 + 47180^2 .

It is a cyclic number.

It is not a de Polignac number, because 50507664761 - 2³⁴ = 33327795577 is a prime.

It is a super-2 number, since 2×50507664761² (a number of 22 digits) contains 22 as substring.

Together with 50507664763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50507664763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25253832380 + 25253832381.

It is an arithmetic number, because the mean of its divisors is an integer number (25253832381).

Almost surely, 2^50507664761 is an apocalyptic number.

It is an amenable number.

50507664761 is a deficient number, since it is larger than the sum of its proper divisors (1).

50507664761 is an equidigital number, since it uses as much as digits as its factorization.

50507664761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 50507664761 in words is "fifty billion, five hundred seven million, six hundred sixty-four thousand, seven hundred sixty-one".