23275535661 has 96 divisors (see below), whose sum is σ = 41455484928. Its totient is φ = 12302357760.

The previous prime is 23275535659. The next prime is 23275535707. The reversal of 23275535661 is 16653557232.

23275535661 is a `hidden beast` number, since 2 + 32 + 7 + 5 + 53 + 566 + 1 = 666.

It is not a de Polignac number, because 23275535661 - 2¹ = 23275535659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23275535641) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3944065 + ... + 3949961.

It is an arithmetic number, because the mean of its divisors is an integer number (431827968).

Almost surely, 2^23275535661 is an apocalyptic number.

23275535661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23275535661 is a deficient number, since it is larger than the sum of its proper divisors (18179949267).

23275535661 is a wasteful number, since it uses less digits than its factorization.

23275535661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6031 (or 6028 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 45.

The spelling of 23275535661 in words is "twenty-three billion, two hundred seventy-five million, five hundred thirty-five thousand, six hundred sixty-one".