18667835483640 has 96 divisors (see below), whose sum is σ = 65146936096080. Its totient is φ = 4266933823488.

The previous prime is 18667835483639. The next prime is 18667835483641. The reversal of 18667835483640 is 4638453876681.

It is an interprime number because it is at equal distance from previous prime (18667835483639) and next prime (18667835483641).

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18667835483641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1587395097 + ... + 1587406856.

Almost surely, 2^{18667835483640} is an apocalyptic number.

18667835483640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18667835483640 is an abundant number, since it is smaller than the sum of its proper divisors (46479100612440).

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

18667835483640 is a wasteful number, since it uses less digits than its factorization.

18667835483640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174801981 (or 3174801970 counting only the distinct ones).

The product of its (nonzero) digits is 557383680, while the sum is 69.

The spelling of 18667835483640 in words is "eighteen trillion, six hundred sixty-seven billion, eight hundred thirty-five million, four hundred eighty-three thousand, six hundred forty".