206918494148400 has 120 divisors (see below), whose sum is σ = 662876016267264. Its totient is φ = 55174343635200.

The previous prime is 206918494148339. The next prime is 206918494148411. The reversal of 206918494148400 is 4841494819602.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10784145 + ... + 23024655.

Almost surely, 2^{206918494148400} is an apocalyptic number.

206918494148400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206918494148400 is an abundant number, since it is smaller than the sum of its proper divisors (455957522118864).

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

206918494148400 is a wasteful number, since it uses less digits than its factorization.

206918494148400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12254619 (or 12254608 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 60.

The spelling of 206918494148400 in words is "two hundred six trillion, nine hundred eighteen billion, four hundred ninety-four million, one hundred forty-eight thousand, four hundred".