18797266620 has 240 divisors, whose sum is σ = 64454721408. Its totient is φ = 4547975040.

The previous prime is 18797266567. The next prime is 18797266643. The reversal of 18797266620 is 2666279781.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 16162159 + ... + 16163321.

Almost surely, 2^18797266620 is an apocalyptic number.

18797266620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18797266620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32227360704).

18797266620 is an abundant number, since it is smaller than the sum of its proper divisors (45657454788).

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

18797266620 is a wasteful number, since it uses less digits than its factorization.

18797266620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 18797266620 in words is "eighteen billion, seven hundred ninety-seven million, two hundred sixty-six thousand, six hundred twenty".