15506270072 has 16 divisors (see below), whose sum is σ = 30076817400. Its totient is φ = 7485785440.

The previous prime is 15506270057. The next prime is 15506270137. The reversal of 15506270072 is 27007260551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33418454 + ... + 33418917.

Almost surely, 2^15506270072 is an apocalyptic number.

It is an amenable number.

15506270072 is a deficient number, since it is larger than the sum of its proper divisors (14570547328).

15506270072 is a wasteful number, since it uses less digits than its factorization.

15506270072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66837406 (or 66837402 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The spelling of 15506270072 in words is "fifteen billion, five hundred six million, two hundred seventy thousand, seventy-two".