15464620020 has 24 divisors (see below), whose sum is σ = 43300936224. Its totient is φ = 4123898656.

The previous prime is 15464619971. The next prime is 15464620057. The reversal of 15464620020 is 2002646451.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 15464620020.

It is a congruent number.

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, 128871774 + ... + 128871893.

It is an arithmetic number, because the mean of its divisors is an integer number (1804205676).

Almost surely, 2^15464620020 is an apocalyptic number.

15464620020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15464620020 is an abundant number, since it is smaller than the sum of its proper divisors (27836316204).

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

15464620020 is a wasteful number, since it uses less digits than its factorization.

15464620020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257743679 (or 257743677 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 15464620020 in words is "fifteen billion, four hundred sixty-four million, six hundred twenty thousand, twenty".