15523120412 has 6 divisors (see below), whose sum is σ = 27165460728. Its totient is φ = 7761560204.

The previous prime is 15523120381. The next prime is 15523120453. The reversal of 15523120412 is 21402132551.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1940390048 + ... + 1940390055.

It is an arithmetic number, because the mean of its divisors is an integer number (4527576788).

Almost surely, 2^15523120412 is an apocalyptic number.

It is an amenable number.

15523120412 is a deficient number, since it is larger than the sum of its proper divisors (11642340316).

15523120412 is a wasteful number, since it uses less digits than its factorization.

15523120412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880780107 (or 3880780105 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 15523120412 its reverse (21402132551), we get a palindrome (36925252963).

The spelling of 15523120412 in words is "fifteen billion, five hundred twenty-three million, one hundred twenty thousand, four hundred twelve".