64422240626 has 4 divisors (see below), whose sum is σ = 96633360942. Its totient is φ = 32211120312.

The previous prime is 64422240581. The next prime is 64422240661. The reversal of 64422240626 is 62604222446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59865855625 + 4556385001 = 244675^2 + 67501^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64422240626.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16105560155 + ... + 16105560158.

Almost surely, 2^64422240626 is an apocalyptic number.

64422240626 is a deficient number, since it is larger than the sum of its proper divisors (32211120316).

64422240626 is a wasteful number, since it uses less digits than its factorization.

64422240626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32211120315.

The product of its (nonzero) digits is 221184, while the sum is 38.

The spelling of 64422240626 in words is "sixty-four billion, four hundred twenty-two million, two hundred forty thousand, six hundred twenty-six".