264452236440 has 128 divisors (see below), whose sum is σ = 954414144000. Its totient is φ = 57264841728.

The previous prime is 264452236403. The next prime is 264452236457. The reversal of 264452236440 is 44632254462.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 264452236392 and 264452236401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8268885 + ... + 8300804.

It is an arithmetic number, because the mean of its divisors is an integer number (7456360500).

Almost surely, 2^264452236440 is an apocalyptic number.

264452236440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264452236440 is an abundant number, since it is smaller than the sum of its proper divisors (689961907560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

264452236440 is a wasteful number, since it uses less digits than its factorization.

264452236440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16569729 (or 16569725 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 42.

The spelling of 264452236440 in words is "two hundred sixty-four billion, four hundred fifty-two million, two hundred thirty-six thousand, four hundred forty".