8553372138 has 12 divisors (see below), whose sum is σ = 18532306338. Its totient is φ = 2851124040.

The previous prime is 8553372137. The next prime is 8553372151. The reversal of 8553372138 is 8312733558.

8553372138 is a `hidden beast` number, since 85 + 533 + 7 + 2 + 1 + 38 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6876223929 + 1677148209 = 82923^2 + 40953^2 .

It is a super-2 number, since 2×8553372138² (a number of 21 digits) contains 22 as substring.

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 junction number, because it is equal to n+sod(n) for n = 8553372093 and 8553372102.

It is not an unprimeable number, because it can be changed into a prime (8553372137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 237593653 + ... + 237593688.

Almost surely, 2^8553372138 is an apocalyptic number.

8553372138 is an abundant number, since it is smaller than the sum of its proper divisors (9978934200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8553372138 is a wasteful number, since it uses less digits than its factorization.

8553372138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475187349 (or 475187346 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 8553372138 is about 92484.4426809180. The cubic root of 8553372138 is about 2045.0901447780.

The spelling of 8553372138 in words is "eight billion, five hundred fifty-three million, three hundred seventy-two thousand, one hundred thirty-eight".