64422002658 has 64 divisors (see below), whose sum is σ = 144079488000. Its totient is φ = 19182608640.

The previous prime is 64422002653. The next prime is 64422002663. The reversal of 64422002658 is 85620022446.

It is an interprime number because it is at equal distance from previous prime (64422002653) and next prime (64422002663).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (64422002653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 329818 + ... + 487466.

It is an arithmetic number, because the mean of its divisors is an integer number (2251242000).

Almost surely, 2^64422002658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64422002658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72039744000).

64422002658 is an abundant number, since it is smaller than the sum of its proper divisors (79657485342).

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

64422002658 is a wasteful number, since it uses less digits than its factorization.

64422002658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157724 (or 157698 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 39.

The spelling of 64422002658 in words is "sixty-four billion, four hundred twenty-two million, two thousand, six hundred fifty-eight".