15120436620 has 48 divisors (see below), whose sum is σ = 43702944768. Its totient is φ = 3902047680.

The previous prime is 15120436619. The next prime is 15120436663. The reversal of 15120436620 is 2663402151.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4062774 + ... + 4066493.

It is an arithmetic number, because the mean of its divisors is an integer number (910478016).

Almost surely, 2^15120436620 is an apocalyptic number.

15120436620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15120436620 is an abundant number, since it is smaller than the sum of its proper divisors (28582508148).

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

15120436620 is a wasteful number, since it uses less digits than its factorization.

15120436620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8129310 (or 8129308 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 15120436620 its reverse (2663402151), we get a palindrome (17783838771).

The spelling of 15120436620 in words is "fifteen billion, one hundred twenty million, four hundred thirty-six thousand, six hundred twenty".