264636772420 has 48 divisors (see below), whose sum is σ = 590163517440. Its totient is φ = 99395928576.

The previous prime is 264636772333. The next prime is 264636772427. The reversal of 264636772420 is 24277636462.

It is not an unprimeable number, because it can be changed into a prime (264636772427) 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, 3038532 + ... + 3124411.

It is an arithmetic number, because the mean of its divisors is an integer number (12295073280).

Almost surely, 2^264636772420 is an apocalyptic number.

264636772420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264636772420 is an abundant number, since it is smaller than the sum of its proper divisors (325526745020).

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

264636772420 is a wasteful number, since it uses less digits than its factorization.

264636772420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6163084 (or 6163082 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 49.

The spelling of 264636772420 in words is "two hundred sixty-four billion, six hundred thirty-six million, seven hundred seventy-two thousand, four hundred twenty".