52634763421 has 2 divisors, whose sum is σ = 52634763422. Its totient is φ = 52634763420.

The previous prime is 52634763413. The next prime is 52634763431. The reversal of 52634763421 is 12436743625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52630783396 + 3980025 = 229414^2 + 1995^2 .

It is a cyclic number.

It is not a de Polignac number, because 52634763421 - 2³ = 52634763413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52634763431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26317381710 + 26317381711.

It is an arithmetic number, because the mean of its divisors is an integer number (26317381711).

Almost surely, 2^52634763421 is an apocalyptic number.

It is an amenable number.

52634763421 is a deficient number, since it is larger than the sum of its proper divisors (1).

52634763421 is an equidigital number, since it uses as much as digits as its factorization.

52634763421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 43.

The spelling of 52634763421 in words is "fifty-two billion, six hundred thirty-four million, seven hundred sixty-three thousand, four hundred twenty-one".