218772519147 has 192 divisors, whose sum is σ = 426052157440. Its totient is φ = 104934009600.

The previous prime is 218772519139. The next prime is 218772519167. The reversal of 218772519147 is 741915277812.

218772519147 is a `hidden beast` number, since 2 + 1 + 87 + 7 + 2 + 519 + 1 + 47 = 666.

It is not a de Polignac number, because 218772519147 - 2³ = 218772519139 is a prime.

It is a super-2 number, since 2×218772519147² (a number of 23 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 218772519093 and 218772519102.

It is not an unprimeable number, because it can be changed into a prime (218772519107) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 61261872 + ... + 61265442.

Almost surely, 2^218772519147 is an apocalyptic number.

218772519147 is a deficient number, since it is larger than the sum of its proper divisors (207279638293).

218772519147 is a wasteful number, since it uses less digits than its factorization.

218772519147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3774 (or 3771 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 54.

The spelling of 218772519147 in words is "two hundred eighteen billion, seven hundred seventy-two million, five hundred nineteen thousand, one hundred forty-seven".