252640696547 has 2 divisors, whose sum is σ = 252640696548. Its totient is φ = 252640696546.

The previous prime is 252640696537. The next prime is 252640696571. The reversal of 252640696547 is 745696046252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252640696547 - 2¹⁰ = 252640695523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252640696492 and 252640696501.

It is not a weakly prime, because it can be changed into another prime (252640696537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126320348273 + 126320348274.

It is an arithmetic number, because the mean of its divisors is an integer number (126320348274).

Almost surely, 2^252640696547 is an apocalyptic number.

252640696547 is a deficient number, since it is larger than the sum of its proper divisors (1).

252640696547 is an equidigital number, since it uses as much as digits as its factorization.

252640696547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21772800, while the sum is 56.

The spelling of 252640696547 in words is "two hundred fifty-two billion, six hundred forty million, six hundred ninety-six thousand, five hundred forty-seven".