64555606122 has 16 divisors (see below), whose sum is σ = 147555671232. Its totient is φ = 18444458880.

The previous prime is 64555606099. The next prime is 64555606133. The reversal of 64555606122 is 22160655546.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1537038241 = 64555606122 / (6 + 4 + 5 + 5 + 5 + 6 + 0 + 6 + 1 + 2 + 2).

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, 768519079 + ... + 768519162.

It is an arithmetic number, because the mean of its divisors is an integer number (9222229452).

Almost surely, 2^64555606122 is an apocalyptic number.

64555606122 is an abundant number, since it is smaller than the sum of its proper divisors (83000065110).

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

64555606122 is a wasteful number, since it uses less digits than its factorization.

64555606122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537038253.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 64555606122 in words is "sixty-four billion, five hundred fifty-five million, six hundred six thousand, one hundred twenty-two".