18475952761 has 8 divisors (see below), whose sum is σ = 21281638400. Its totient is φ = 15711833088.

The previous prime is 18475952749. The next prime is 18475952779. The reversal of 18475952761 is 16725957481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18475952761 - 2⁷ = 18475952633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18475952711) 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, 10390536 + ... + 10392313.

It is an arithmetic number, because the mean of its divisors is an integer number (2660204800).

Almost surely, 2^18475952761 is an apocalyptic number.

It is an amenable number.

18475952761 is a deficient number, since it is larger than the sum of its proper divisors (2805685639).

18475952761 is a wasteful number, since it uses less digits than its factorization.

18475952761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20782983.

The product of its digits is 4233600, while the sum is 55.

The spelling of 18475952761 in words is "eighteen billion, four hundred seventy-five million, nine hundred fifty-two thousand, seven hundred sixty-one".