66938754300 has 72 divisors (see below), whose sum is σ = 211283060352. Its totient is φ = 16227576000.

The previous prime is 66938754293. The next prime is 66938754317. The reversal of 66938754300 is 345783966.

It is a congruent number.

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, 10138936 + ... + 10145535.

Almost surely, 2^66938754300 is an apocalyptic number.

66938754300 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66938754300 is an abundant number, since it is smaller than the sum of its proper divisors (144344306052).

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

66938754300 is a wasteful number, since it uses less digits than its factorization.

66938754300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20284499 (or 20284492 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 66938754300 in words is "sixty-six billion, nine hundred thirty-eight million, seven hundred fifty-four thousand, three hundred".