15420213131330 has 24 divisors (see below), whose sum is σ = 32288038108668. Its totient is φ = 5286930216288.

The previous prime is 15420213131303. The next prime is 15420213131353. The reversal of 15420213131330 is 3313131202451.

It can be written as a sum of positive squares in 2 ways, for example, as 12712783119001 + 2707430012329 = 3565499^2 + 1645427^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15420213131293 and 15420213131302.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15734910869 + ... + 15734911848.

Almost surely, 2^{15420213131330} is an apocalyptic number.

15420213131330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15420213131330 is an abundant number, since it is smaller than the sum of its proper divisors (16867824977338).

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

15420213131330 is a wasteful number, since it uses less digits than its factorization.

15420213131330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31469822738 (or 31469822731 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 15420213131330 its reverse (3313131202451), we get a palindrome (18733344333781).

The spelling of 15420213131330 in words is "fifteen trillion, four hundred twenty billion, two hundred thirteen million, one hundred thirty-one thousand, three hundred thirty".