64404064226 has 4 divisors (see below), whose sum is σ = 96606096342. Its totient is φ = 32202032112.

The previous prime is 64404064211. The next prime is 64404064243. The reversal of 64404064226 is 62246040446.

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., 63743625625 + 660438601 = 252475^2 + 25699^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64404064226.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16101016055 + ... + 16101016058.

Almost surely, 2^64404064226 is an apocalyptic number.

64404064226 is a deficient number, since it is larger than the sum of its proper divisors (32202032116).

64404064226 is a wasteful number, since it uses less digits than its factorization.

64404064226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32202032115.

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

The spelling of 64404064226 in words is "sixty-four billion, four hundred four million, sixty-four thousand, two hundred twenty-six".