15124123412 has 6 divisors (see below), whose sum is σ = 26467215978. Its totient is φ = 7562061704.

The previous prime is 15124123397. The next prime is 15124123451. The reversal of 15124123412 is 21432142151.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10956646276 + 4167477136 = 104674^2 + 64556^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1890515423 + ... + 1890515430.

It is an arithmetic number, because the mean of its divisors is an integer number (4411202663).

Almost surely, 2^15124123412 is an apocalyptic number.

It is an amenable number.

15124123412 is a deficient number, since it is larger than the sum of its proper divisors (11343092566).

15124123412 is a wasteful number, since it uses less digits than its factorization.

15124123412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3781030857 (or 3781030855 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

Adding to 15124123412 its reverse (21432142151), we get a palindrome (36556265563).

The spelling of 15124123412 in words is "fifteen billion, one hundred twenty-four million, one hundred twenty-three thousand, four hundred twelve".