64335776040 has 96 divisors (see below), whose sum is σ = 216835426080. Its totient is φ = 17156204352.

The previous prime is 64335776027. The next prime is 64335776047. The reversal of 64335776040 is 4067753346.

64335776040 is a `hidden beast` number, since 6 + 4 + 3 + 35 + 7 + 7 + 604 + 0 = 666.

64335776040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (64335776047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3299734 + ... + 3319173.

It is an arithmetic number, because the mean of its divisors is an integer number (2258702355).

Almost surely, 2^64335776040 is an apocalyptic number.

64335776040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64335776040 is an abundant number, since it is smaller than the sum of its proper divisors (152499650040).

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

64335776040 is a wasteful number, since it uses less digits than its factorization.

64335776040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6618933 (or 6618917 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 45.

The spelling of 64335776040 in words is "sixty-four billion, three hundred thirty-five million, seven hundred seventy-six thousand, forty".