18664801260 has 48 divisors (see below), whose sum is σ = 59727365376. Its totient is φ = 4266240192.

The previous prime is 18664801247. The next prime is 18664801261. The reversal of 18664801260 is 6210846681.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (18664801261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22219582 + ... + 22220421.

It is an arithmetic number, because the mean of its divisors is an integer number (1244320112).

Almost surely, 2^18664801260 is an apocalyptic number.

18664801260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18664801260 is an abundant number, since it is smaller than the sum of its proper divisors (41062564116).

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

18664801260 is a wasteful number, since it uses less digits than its factorization.

18664801260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44440022 (or 44440020 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 18664801260 in words is "eighteen billion, six hundred sixty-four million, eight hundred one thousand, two hundred sixty".