15122420404 has 96 divisors (see below), whose sum is σ = 33132153600. Its totient is φ = 5880314880.

The previous prime is 15122420381. The next prime is 15122420419. The reversal of 15122420404 is 40402422151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5862387 + ... + 5864965.

It is an arithmetic number, because the mean of its divisors is an integer number (345126600).

Almost surely, 2^15122420404 is an apocalyptic number.

15122420404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15122420404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16566076800).

15122420404 is an abundant number, since it is smaller than the sum of its proper divisors (18009733196).

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

15122420404 is a wasteful number, since it uses less digits than its factorization.

15122420404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873 (or 2871 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 15122420404 its reverse (40402422151), we get a palindrome (55524842555).

The spelling of 15122420404 in words is "fifteen billion, one hundred twenty-two million, four hundred twenty thousand, four hundred four".