15215234020 has 36 divisors (see below), whose sum is σ = 37168645500. Its totient is φ = 5216651328.

The previous prime is 15215234009. The next prime is 15215234033. The reversal of 15215234020 is 2043251251.

15215234020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2696309476 + 12518924544 = 51926^2 + 111888^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7761895 + ... + 7763854.

It is an arithmetic number, because the mean of its divisors is an integer number (1032462375).

Almost surely, 2^15215234020 is an apocalyptic number.

15215234020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15215234020 is an abundant number, since it is smaller than the sum of its proper divisors (21953411480).

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

15215234020 is a wasteful number, since it uses less digits than its factorization.

15215234020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15525772 (or 15525763 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 15215234020 its reverse (2043251251), we get a palindrome (17258485271).

The spelling of 15215234020 in words is "fifteen billion, two hundred fifteen million, two hundred thirty-four thousand, twenty".