52913697649 has 2 divisors, whose sum is σ = 52913697650. Its totient is φ = 52913697648.

The previous prime is 52913697619. The next prime is 52913697709. The reversal of 52913697649 is 94679631925.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42422817024 + 10490880625 = 205968^2 + 102425^2 .

It is a cyclic number.

It is not a de Polignac number, because 52913697649 - 2¹³ = 52913689457 is a prime.

It is not a weakly prime, because it can be changed into another prime (52913697619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26456848824 + 26456848825.

It is an arithmetic number, because the mean of its divisors is an integer number (26456848825).

Almost surely, 2^52913697649 is an apocalyptic number.

It is an amenable number.

52913697649 is a deficient number, since it is larger than the sum of its proper divisors (1).

52913697649 is an equidigital number, since it uses as much as digits as its factorization.

52913697649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22044960, while the sum is 61.

The spelling of 52913697649 in words is "fifty-two billion, nine hundred thirteen million, six hundred ninety-seven thousand, six hundred forty-nine".