15984700155 has 12 divisors (see below), whose sum is σ = 27706813680. Its totient is φ = 8525173392.

The previous prime is 15984700111. The next prime is 15984700163. The reversal of 15984700155 is 55100748951.

15984700155 is a `hidden beast` number, since 1 + 598 + 4 + 7 + 0 + 0 + 1 + 55 = 666.

It is not a de Polignac number, because 15984700155 - 2¹⁰ = 15984699131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 355215559 = 15984700155 / (1 + 5 + 9 + 8 + 4 + 7 + 0 + 0 + 1 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 15984700155.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177607735 + ... + 177607824.

It is an arithmetic number, because the mean of its divisors is an integer number (2308901140).

Almost surely, 2^15984700155 is an apocalyptic number.

15984700155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15984700155 is a deficient number, since it is larger than the sum of its proper divisors (11722113525).

15984700155 is a wasteful number, since it uses less digits than its factorization.

15984700155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355215570 (or 355215567 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 45.

The spelling of 15984700155 in words is "fifteen billion, nine hundred eighty-four million, seven hundred thousand, one hundred fifty-five".