66290727241920 has 112 divisors (see below), whose sum is σ = 210475316521728. Its totient is φ = 17677337656320.

The previous prime is 66290727241919. The next prime is 66290727241951. The reversal of 66290727241920 is 2914272709266.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104695885 + ... + 105327155.

Almost surely, 2^{66290727241920} is an apocalyptic number.

66290727241920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66290727241920 is an abundant number, since it is smaller than the sum of its proper divisors (144184589279808).

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

66290727241920 is a wasteful number, since it uses less digits than its factorization.

66290727241920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740678 (or 740668 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 57.

The spelling of 66290727241920 in words is "sixty-six trillion, two hundred ninety billion, seven hundred twenty-seven million, two hundred forty-one thousand, nine hundred twenty".