66402882408 has 64 divisors (see below), whose sum is σ = 166386605760. Its totient is φ = 22083780096.

The previous prime is 66402882407. The next prime is 66402882409. The reversal of 66402882408 is 80428820466.

It is an interprime number because it is at equal distance from previous prime (66402882407) and next prime (66402882409).

It is not an unprimeable number, because it can be changed into a prime (66402882407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28291491 + ... + 28293837.

It is an arithmetic number, because the mean of its divisors is an integer number (2599790715).

Almost surely, 2^66402882408 is an apocalyptic number.

It is an amenable number.

66402882408 is an abundant number, since it is smaller than the sum of its proper divisors (99983723352).

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

66402882408 is a wasteful number, since it uses less digits than its factorization.

66402882408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546 (or 4542 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 48.

The spelling of 66402882408 in words is "sixty-six billion, four hundred two million, eight hundred eighty-two thousand, four hundred eight".