23135552290 has 16 divisors (see below), whose sum is σ = 41645730168. Its totient is φ = 9253835136.

The previous prime is 23135552221. The next prime is 23135552291. The reversal of 23135552290 is 9225553132.

It can be written as a sum of positive squares in 4 ways, for example, as 23109776361 + 25775929 = 152019^2 + 5077^2 .

It is not an unprimeable number, because it can be changed into a prime (23135552291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421894 + ... + 473566.

Almost surely, 2^23135552290 is an apocalyptic number.

23135552290 is a deficient number, since it is larger than the sum of its proper divisors (18510177878).

23135552290 is a wasteful number, since it uses less digits than its factorization.

23135552290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96453.

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 23135552290 in words is "twenty-three billion, one hundred thirty-five million, five hundred fifty-two thousand, two hundred ninety".