64432201398 has 16 divisors (see below), whose sum is σ = 136444662000. Its totient is φ = 20214023936.

The previous prime is 64432201307. The next prime is 64432201411. The reversal of 64432201398 is 89310223446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315844023 + ... + 315844226.

It is an arithmetic number, because the mean of its divisors is an integer number (8527791375).

Almost surely, 2^64432201398 is an apocalyptic number.

64432201398 is an abundant number, since it is smaller than the sum of its proper divisors (72012460602).

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

64432201398 is a wasteful number, since it uses less digits than its factorization.

64432201398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631688271.

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 64432201398 in words is "sixty-four billion, four hundred thirty-two million, two hundred one thousand, three hundred ninety-eight".