18777607620 has 48 divisors (see below), whose sum is σ = 53068696128. Its totient is φ = 4960562560.

The previous prime is 18777607591. The next prime is 18777607657. The reversal of 18777607620 is 2670677781.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1456011 + ... + 1468850.

It is an arithmetic number, because the mean of its divisors is an integer number (1105597836).

Almost surely, 2^18777607620 is an apocalyptic number.

18777607620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18777607620 is an abundant number, since it is smaller than the sum of its proper divisors (34291088508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18777607620 is a wasteful number, since it uses less digits than its factorization.

18777607620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924980 (or 2924978 counting only the distinct ones).

The product of its (nonzero) digits is 1382976, while the sum is 51.

The spelling of 18777607620 in words is "eighteen billion, seven hundred seventy-seven million, six hundred seven thousand, six hundred twenty".