64622066394 has 16 divisors (see below), whose sum is σ = 129255793632. Its totient is φ = 21538745328.

The previous prime is 64622066389. The next prime is 64622066407. The reversal of 64622066394 is 49366022646.

It is a super-2 number, since 2×64622066394² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412984 + ... + 547539.

It is an arithmetic number, because the mean of its divisors is an integer number (8078487102).

Almost surely, 2^64622066394 is an apocalyptic number.

64622066394 is an abundant number, since it is smaller than the sum of its proper divisors (64633727238).

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

64622066394 is a wasteful number, since it uses less digits than its factorization.

64622066394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971741.

The product of its (nonzero) digits is 2239488, while the sum is 48.

The spelling of 64622066394 in words is "sixty-four billion, six hundred twenty-two million, sixty-six thousand, three hundred ninety-four".