18520077675 has 24 divisors (see below), whose sum is σ = 33403487040. Its totient is φ = 8979431200.

The previous prime is 18520077647. The next prime is 18520077721. The reversal of 18520077675 is 57677002581.

It is a happy number.

It is not a de Polignac number, because 18520077675 - 2¹¹ = 18520075627 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11223465 + ... + 11225114.

It is an arithmetic number, because the mean of its divisors is an integer number (1391811960).

Almost surely, 2^18520077675 is an apocalyptic number.

18520077675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18520077675 is a deficient number, since it is larger than the sum of its proper divisors (14883409365).

18520077675 is a wasteful number, since it uses less digits than its factorization.

18520077675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22448603 (or 22448598 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 48.

The spelling of 18520077675 in words is "eighteen billion, five hundred twenty million, seventy-seven thousand, six hundred seventy-five".