20479245264 has 60 divisors (see below), whose sum is σ = 59805341856. Its totient is φ = 6529613376.

The previous prime is 20479245263. The next prime is 20479245289. The reversal of 20479245264 is 46254297402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20479245263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3088362 + ... + 3094985.

Almost surely, 2^20479245264 is an apocalyptic number.

20479245264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20479245264 is an abundant number, since it is smaller than the sum of its proper divisors (39326096592).

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

20479245264 is a wasteful number, since it uses less digits than its factorization.

20479245264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6183384 (or 6183375 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 20479245264 in words is "twenty billion, four hundred seventy-nine million, two hundred forty-five thousand, two hundred sixty-four".