18720290571460 has 48 divisors (see below), whose sum is σ = 41022752803200. Its totient is φ = 7162389045504.

The previous prime is 18720290571439. The next prime is 18720290571461. The reversal of 18720290571460 is 6417509202781.

It is a junction number, because it is equal to n+sod(n) for n = 18720290571398 and 18720290571407.

It is not an unprimeable number, because it can be changed into a prime (18720290571461) 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, 21777496 + ... + 22620784.

It is an arithmetic number, because the mean of its divisors is an integer number (854640683400).

Almost surely, 2^{18720290571460} is an apocalyptic number.

18720290571460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18720290571460 is an abundant number, since it is smaller than the sum of its proper divisors (22302462231740).

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

18720290571460 is a wasteful number, since it uses less digits than its factorization.

18720290571460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891580 (or 891578 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 18720290571460 in words is "eighteen trillion, seven hundred twenty billion, two hundred ninety million, five hundred seventy-one thousand, four hundred sixty".