23690135057 has 4 divisors (see below), whose sum is σ = 23690540580. Its totient is φ = 23689729536.

The previous prime is 23690135041. The next prime is 23690135059. The reversal of 23690135057 is 75053109632.

It is a happy number.

It is a Cunningham number, because it is equal to 153916²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21596065936 + 2094069121 = 146956^2 + 45761^2 .

It is a cyclic number.

It is not a de Polignac number, because 23690135057 - 2⁴ = 23690135041 is a prime.

It is a super-2 number, since 2×23690135057² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23690135059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96608 + ... + 238145.

It is an arithmetic number, because the mean of its divisors is an integer number (5922635145).

Almost surely, 2^23690135057 is an apocalyptic number.

It is an amenable number.

23690135057 is a deficient number, since it is larger than the sum of its proper divisors (405523).

23690135057 is an equidigital number, since it uses as much as digits as its factorization.

23690135057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405522.

The product of its (nonzero) digits is 170100, while the sum is 41.

The spelling of 23690135057 in words is "twenty-three billion, six hundred ninety million, one hundred thirty-five thousand, fifty-seven".