15072733687 has 48 divisors (see below), whose sum is σ = 17776886400. Its totient is φ = 12732984000.

The previous prime is 15072733657. The next prime is 15072733723. The reversal of 15072733687 is 78633727051.

It is not a de Polignac number, because 15072733687 - 2²⁷ = 14938515959 is a prime.

It is a super-2 number, since 2×15072733687² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15072733687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15072733657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32275428 + ... + 32275894.

It is an arithmetic number, because the mean of its divisors is an integer number (370351800).

Almost surely, 2^15072733687 is an apocalyptic number.

15072733687 is a deficient number, since it is larger than the sum of its proper divisors (2704152713).

15072733687 is a wasteful number, since it uses less digits than its factorization.

15072733687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 15072733687 in words is "fifteen billion, seventy-two million, seven hundred thirty-three thousand, six hundred eighty-seven".