263629952457 has 16 divisors (see below), whose sum is σ = 354588104640. Its totient is φ = 174216499200.

The previous prime is 263629952441. The next prime is 263629952513. The reversal of 263629952457 is 754259926362.

It is not a de Polignac number, because 263629952457 - 2⁴ = 263629952441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 263629952457.

It is not an unprimeable number, because it can be changed into a prime (263629972457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225844 + ... + 760437.

It is an arithmetic number, because the mean of its divisors is an integer number (22161756540).

Almost surely, 2^263629952457 is an apocalyptic number.

It is an amenable number.

263629952457 is a deficient number, since it is larger than the sum of its proper divisors (90958152183).

263629952457 is a wasteful number, since it uses less digits than its factorization.

263629952457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987064.

The product of its digits is 48988800, while the sum is 60.

The spelling of 263629952457 in words is "two hundred sixty-three billion, six hundred twenty-nine million, nine hundred fifty-two thousand, four hundred fifty-seven".