15157240623 has 18 divisors (see below), whose sum is σ = 25023089832. Its totient is φ = 8660721960.

The previous prime is 15157240621. The next prime is 15157240643. The reversal of 15157240623 is 32604275151.

15157240623 is a `hidden beast` number, since 1 + 5 + 1 + 5 + 7 + 24 + 0 + 623 = 666.

It is not a de Polignac number, because 15157240623 - 2¹ = 15157240621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15157240621) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 969438 + ... + 984948.

Almost surely, 2^15157240623 is an apocalyptic number.

15157240623 is a deficient number, since it is larger than the sum of its proper divisors (9865849209).

15157240623 is an frugal number, since it uses more digits than its factorization.

15157240623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31035 (or 15521 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 15157240623 in words is "fifteen billion, one hundred fifty-seven million, two hundred forty thousand, six hundred twenty-three".