264403605633256 has 16 divisors (see below), whose sum is σ = 497731887102240. Its totient is φ = 131675102406000.

The previous prime is 264403605633149. The next prime is 264403605633257. The reversal of 264403605633256 is 652336506304462.

It is a junction number, because it is equal to n+sod(n) for n = 264403605633197 and 264403605633206.

It is not an unprimeable number, because it can be changed into a prime (264403605633257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65837549196 + ... + 65837553211.

It is an arithmetic number, because the mean of its divisors is an integer number (31108242943890).

Almost surely, 2^{264403605633256} is an apocalyptic number.

It is an amenable number.

264403605633256 is a deficient number, since it is larger than the sum of its proper divisors (233328281468984).

264403605633256 is a wasteful number, since it uses less digits than its factorization.

264403605633256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131675102664 (or 131675102660 counting only the distinct ones).

The product of its (nonzero) digits is 55987200, while the sum is 55.

The spelling of 264403605633256 in words is "two hundred sixty-four trillion, four hundred three billion, six hundred five million, six hundred thirty-three thousand, two hundred fifty-six".