20464026264 has 72 divisors (see below), whose sum is σ = 60919966380. Its totient is φ = 6201217440.

The previous prime is 20464026263. The next prime is 20464026269. The reversal of 20464026264 is 46262046402.

20464026264 is a `hidden beast` number, since 2 + 0 + 4 + 640 + 2 + 6 + 2 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20464026263) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1165762 + ... + 1183185.

Almost surely, 2^20464026264 is an apocalyptic number.

20464026264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20464026264 is an abundant number, since it is smaller than the sum of its proper divisors (40455940116).

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

20464026264 is a wasteful number, since it uses less digits than its factorization.

20464026264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348981 (or 2348963 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The spelling of 20464026264 in words is "twenty billion, four hundred sixty-four million, twenty-six thousand, two hundred sixty-four".