15231505012 has 12 divisors (see below), whose sum is σ = 26657280160. Its totient is φ = 7615139256.

The previous prime is 15231504991. The next prime is 15231505013. The reversal of 15231505012 is 21050513251.

It is a super-2 number, since 2×15231505012² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15231505013) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 94962 + ... + 198697.

Almost surely, 2^15231505012 is an apocalyptic number.

It is an amenable number.

15231505012 is a deficient number, since it is larger than the sum of its proper divisors (11425775148).

15231505012 is a wasteful number, since it uses less digits than its factorization.

15231505012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306630 (or 306628 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The spelling of 15231505012 in words is "fifteen billion, two hundred thirty-one million, five hundred five thousand, twelve".