64222163690 has 16 divisors (see below), whose sum is σ = 115618860000. Its totient is φ = 25684650960.

The previous prime is 64222163671. The next prime is 64222163693. The reversal of 64222163690 is 9636122246.

It is a super-2 number, since 2×64222163690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64222163693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462440 + ... + 585059.

It is an arithmetic number, because the mean of its divisors is an integer number (7226178750).

Almost surely, 2^64222163690 is an apocalyptic number.

64222163690 is a deficient number, since it is larger than the sum of its proper divisors (51396696310).

64222163690 is a wasteful number, since it uses less digits than its factorization.

64222163690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053637.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 64222163690 in words is "sixty-four billion, two hundred twenty-two million, one hundred sixty-three thousand, six hundred ninety".