64214888390 has 32 divisors (see below), whose sum is σ = 120173294304. Its totient is φ = 24685436160.

The previous prime is 64214888389. The next prime is 64214888393. The reversal of 64214888390 is 9388841246.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64214888393) 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, 1141349 + ... + 1196288.

It is an arithmetic number, because the mean of its divisors is an integer number (3755415447).

Almost surely, 2^64214888390 is an apocalyptic number.

64214888390 is a deficient number, since it is larger than the sum of its proper divisors (55958405914).

64214888390 is a wasteful number, since it uses less digits than its factorization.

64214888390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2337752.

The product of its (nonzero) digits is 2654208, while the sum is 53.

The spelling of 64214888390 in words is "sixty-four billion, two hundred fourteen million, eight hundred eighty-eight thousand, three hundred ninety".