66260376624 has 80 divisors (see below), whose sum is σ = 190286265344. Its totient is φ = 19730131200.

The previous prime is 66260376607. The next prime is 66260376641. The reversal of 66260376624 is 42667306266.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66260376607) and next prime (66260376641).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1693342 + ... + 1732029.

Almost surely, 2^66260376624 is an apocalyptic number.

It is an amenable number.

66260376624 is an abundant number, since it is smaller than the sum of its proper divisors (124025888720).

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

66260376624 is a wasteful number, since it uses less digits than its factorization.

66260376624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3425426 (or 3425420 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 48.

The spelling of 66260376624 in words is "sixty-six billion, two hundred sixty million, three hundred seventy-six thousand, six hundred twenty-four".