64655790817422 has 32 divisors (see below), whose sum is σ = 151389168747264. Its totient is φ = 18022520088000.

The previous prime is 64655790817313. The next prime is 64655790817439. The reversal of 64655790817422 is 22471809755646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18773456704 + ... + 18773460147.

It is an arithmetic number, because the mean of its divisors is an integer number (4730911523352).

Almost surely, 2^{64655790817422} is an apocalyptic number.

64655790817422 is an abundant number, since it is smaller than the sum of its proper divisors (86733377929842).

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

64655790817422 is a wasteful number, since it uses less digits than its factorization.

64655790817422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37546916904.

The product of its (nonzero) digits is 203212800, while the sum is 66.

The spelling of 64655790817422 in words is "sixty-four trillion, six hundred fifty-five billion, seven hundred ninety million, eight hundred seventeen thousand, four hundred twenty-two".