64299474240 has 112 divisors (see below), whose sum is σ = 208494611712. Its totient is φ = 16781694976.

The previous prime is 64299474227. The next prime is 64299474241. The reversal of 64299474240 is 4247499246.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64299474241) 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, 667419 + ... + 757658.

Almost surely, 2^64299474240 is an apocalyptic number.

64299474240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64299474240 is an abundant number, since it is smaller than the sum of its proper divisors (144195137472).

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

64299474240 is a wasteful number, since it uses less digits than its factorization.

64299474240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425144 (or 1425134 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 64299474240 in words is "sixty-four billion, two hundred ninety-nine million, four hundred seventy-four thousand, two hundred forty".