15199738506 has 32 divisors (see below), whose sum is σ = 34941931200. Its totient is φ = 4891869360.

The previous prime is 15199738493. The next prime is 15199738511. The reversal of 15199738506 is 60583799151.

15199738506 is a `hidden beast` number, since 1 + 5 + 19 + 97 + 38 + 506 = 666.

It is a super-2 number, since 2×15199738506² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4851480 + ... + 4854611.

It is an arithmetic number, because the mean of its divisors is an integer number (1091935350).

Almost surely, 2^15199738506 is an apocalyptic number.

15199738506 is an abundant number, since it is smaller than the sum of its proper divisors (19742192694).

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

15199738506 is a wasteful number, since it uses less digits than its factorization.

15199738506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9706131 (or 9706125 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 54.

The spelling of 15199738506 in words is "fifteen billion, one hundred ninety-nine million, seven hundred thirty-eight thousand, five hundred six".