64266681632 has 48 divisors (see below), whose sum is σ = 133212794400. Its totient is φ = 30435586560.

The previous prime is 64266681631. The next prime is 64266681641. The reversal of 64266681632 is 23618666246.

It is not an unprimeable number, because it can be changed into a prime (64266681631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3985907 + ... + 4001997.

It is an arithmetic number, because the mean of its divisors is an integer number (2775266550).

Almost surely, 2^64266681632 is an apocalyptic number.

It is an amenable number.

64266681632 is an abundant number, since it is smaller than the sum of its proper divisors (68946112768).

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

64266681632 is a wasteful number, since it uses less digits than its factorization.

64266681632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22689 (or 22681 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 50.

The spelling of 64266681632 in words is "sixty-four billion, two hundred sixty-six million, six hundred eighty-one thousand, six hundred thirty-two".