264402681380 has 24 divisors (see below), whose sum is σ = 556307308032. Its totient is φ = 105558848352.

The previous prime is 264402681373. The next prime is 264402681391. The reversal of 264402681380 is 83186204462.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12628292 + ... + 12649211.

It is an arithmetic number, because the mean of its divisors is an integer number (23179471168).

Almost surely, 2^264402681380 is an apocalyptic number.

264402681380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264402681380 is an abundant number, since it is smaller than the sum of its proper divisors (291904626652).

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

264402681380 is a wasteful number, since it uses less digits than its factorization.

264402681380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25278035 (or 25278033 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 44.

The spelling of 264402681380 in words is "two hundred sixty-four billion, four hundred two million, six hundred eighty-one thousand, three hundred eighty".