64854238198290 has 32 divisors (see below), whose sum is σ = 155651324379840. Its totient is φ = 17294335441344.

The previous prime is 64854238198289. The next prime is 64854238198297. The reversal of 64854238198290 is 9289183245846.

It is not an unprimeable number, because it can be changed into a prime (64854238198297) 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, 3851124 + ... + 12022463.

It is an arithmetic number, because the mean of its divisors is an integer number (4864103886870).

Almost surely, 2^{64854238198290} is an apocalyptic number.

64854238198290 is an abundant number, since it is smaller than the sum of its proper divisors (90797086181550).

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

64854238198290 is a wasteful number, since it uses less digits than its factorization.

64854238198290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16009786.

The product of its (nonzero) digits is 238878720, while the sum is 69.

The spelling of 64854238198290 in words is "sixty-four trillion, eight hundred fifty-four billion, two hundred thirty-eight million, one hundred ninety-eight thousand, two hundred ninety".