264401253535550 has 24 divisors (see below), whose sum is σ = 493601041312032. Its totient is φ = 105370241256000.

The previous prime is 264401253535543. The next prime is 264401253535567. The reversal of 264401253535550 is 55535352104462.

It is a super-2 number, since 2×264401253535550² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9756490271 + ... + 9756517370.

It is an arithmetic number, because the mean of its divisors is an integer number (20566710054668).

Almost surely, 2^{264401253535550} is an apocalyptic number.

264401253535550 is a deficient number, since it is larger than the sum of its proper divisors (229199787776482).

264401253535550 is a wasteful number, since it uses less digits than its factorization.

264401253535550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19513007924 (or 19513007919 counting only the distinct ones).

The product of its (nonzero) digits is 10800000, while the sum is 50.

The spelling of 264401253535550 in words is "two hundred sixty-four trillion, four hundred one billion, two hundred fifty-three million, five hundred thirty-five thousand, five hundred fifty".