66754149630 has 32 divisors (see below), whose sum is σ = 183097096704. Its totient is φ = 15258091296.

The previous prime is 66754149617. The next prime is 66754149653. The reversal of 66754149630 is 3694145766.

It is a super-2 number, since 2×66754149630² (a number of 22 digits) contains 22 as substring.

It is a congruent 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, 158938242 + ... + 158938661.

It is an arithmetic number, because the mean of its divisors is an integer number (5721784272).

Almost surely, 2^66754149630 is an apocalyptic number.

66754149630 is an abundant number, since it is smaller than the sum of its proper divisors (116342947074).

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

66754149630 is a wasteful number, since it uses less digits than its factorization.

66754149630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317876920.

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

The spelling of 66754149630 in words is "sixty-six billion, seven hundred fifty-four million, one hundred forty-nine thousand, six hundred thirty".