23555213451531 has 12 divisors (see below), whose sum is σ = 34024243038240. Its totient is φ = 15703454481840.

The previous prime is 23555213451487. The next prime is 23555213451533. The reversal of 23555213451531 is 13515431255532.

23555213451531 is a `hidden beast` number, since 2 + 3 + 5 + 5 + 52 + 13 + 4 + 51 + 531 = 666.

It is not a de Polignac number, because 23555213451531 - 2¹¹ = 23555213449483 is a prime.

It is a super-2 number, since 2×23555213451531² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23555213451533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8333710 + ... + 10796348.

It is an arithmetic number, because the mean of its divisors is an integer number (2835353586520).

Almost surely, 2^{23555213451531} is an apocalyptic number.

23555213451531 is a deficient number, since it is larger than the sum of its proper divisors (10469029586709).

23555213451531 is a wasteful number, since it uses less digits than its factorization.

23555213451531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3525426 (or 3525423 counting only the distinct ones).

The product of its digits is 1350000, while the sum is 45.

The spelling of 23555213451531 in words is "twenty-three trillion, five hundred fifty-five billion, two hundred thirteen million, four hundred fifty-one thousand, five hundred thirty-one".