64220201900 has 18 divisors (see below), whose sum is σ = 139357838340. Its totient is φ = 25688080720.

The previous prime is 64220201891. The next prime is 64220201917. The reversal of 64220201900 is 910202246.

It is a super-2 number, since 2×64220201900² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64220201900.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 321100910 + ... + 321101109.

It is an arithmetic number, because the mean of its divisors is an integer number (7742102130).

Almost surely, 2^64220201900 is an apocalyptic number.

It is an amenable number.

64220201900 is an abundant number, since it is smaller than the sum of its proper divisors (75137636440).

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

64220201900 is a wasteful number, since it uses less digits than its factorization.

64220201900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642202033 (or 642202026 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 64220201900 in words is "sixty-four billion, two hundred twenty million, two hundred one thousand, nine hundred".