19155272157 has 24 divisors (see below), whose sum is σ = 31830830720. Its totient is φ = 10873375200.

The previous prime is 19155272117. The next prime is 19155272219. The reversal of 19155272157 is 75127255191.

19155272157 is a `hidden beast` number, since 1 + 91 + 552 + 7 + 2 + 1 + 5 + 7 = 666.

It is not a de Polignac number, because 19155272157 - 2⁸ = 19155271901 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19155272117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 997282 + ... + 1016307.

Almost surely, 2^19155272157 is an apocalyptic number.

It is an amenable number.

19155272157 is a deficient number, since it is larger than the sum of its proper divisors (12675558563).

19155272157 is a wasteful number, since it uses less digits than its factorization.

19155272157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013753 (or 2013750 counting only the distinct ones).

The product of its digits is 220500, while the sum is 45.

The spelling of 19155272157 in words is "nineteen billion, one hundred fifty-five million, two hundred seventy-two thousand, one hundred fifty-seven".