64432395290 has 32 divisors (see below), whose sum is σ = 116349699024. Its totient is φ = 25690521600.

The previous prime is 64432395229. The next prime is 64432395301. The reversal of 64432395290 is 9259323446.

It can be written as a sum of positive squares in 8 ways, for example, as 30069987649 + 34362407641 = 173407^2 + 185371^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6639722 + ... + 6649418.

Almost surely, 2^64432395290 is an apocalyptic number.

64432395290 is a deficient number, since it is larger than the sum of its proper divisors (51917303734).

64432395290 is a wasteful number, since it uses less digits than its factorization.

64432395290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11762.

The product of its (nonzero) digits is 1399680, while the sum is 47.

The spelling of 64432395290 in words is "sixty-four billion, four hundred thirty-two million, three hundred ninety-five thousand, two hundred ninety".