15230121504 has 48 divisors (see below), whose sum is σ = 43054385472. Its totient is φ = 4686190848.

The previous prime is 15230121493. The next prime is 15230121521. The reversal of 15230121504 is 40512103251.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 6100564 + ... + 6103059.

It is an arithmetic number, because the mean of its divisors is an integer number (896966364).

Almost surely, 2^15230121504 is an apocalyptic number.

It is an amenable number.

15230121504 is an abundant number, since it is smaller than the sum of its proper divisors (27824263968).

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

15230121504 is a wasteful number, since it uses less digits than its factorization.

15230121504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12203649 (or 12203641 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 15230121504 its reverse (40512103251), we get a palindrome (55742224755).

The spelling of 15230121504 in words is "fifteen billion, two hundred thirty million, one hundred twenty-one thousand, five hundred four".