66090858305100 has 72 divisors (see below), whose sum is σ = 191223890710608. Its totient is φ = 17624136038400.

The previous prime is 66090858305099. The next prime is 66090858305141. The reversal of 66090858305100 is 150385809066.

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, 71263572 + ... + 72185028.

Almost surely, 2^{66090858305100} is an apocalyptic number.

66090858305100 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66090858305100 is an abundant number, since it is smaller than the sum of its proper divisors (125133032405508).

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

66090858305100 is a wasteful number, since it uses less digits than its factorization.

66090858305100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160555 (or 1160548 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 66090858305100 in words is "sixty-six trillion, ninety billion, eight hundred fifty-eight million, three hundred five thousand, one hundred".