128977616622 has 8 divisors (see below), whose sum is σ = 257955233256. Its totient is φ = 42992538872.

The previous prime is 128977616617. The next prime is 128977616627. The reversal of 128977616622 is 226616779821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (128977616617) and next prime (128977616627).

It is a sphenic number, since it is the product of 3 distinct primes.

128977616622 is an admirable number.

It is a super-2 number, since 2×128977616622² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128977616627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10748134713 + ... + 10748134724.

It is an arithmetic number, because the mean of its divisors is an integer number (32244404157).

Almost surely, 2^128977616622 is an apocalyptic number.

128977616622 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128977616622 is a wasteful number, since it uses less digits than its factorization.

128977616622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21496269442.

The product of its digits is 6096384, while the sum is 57.

The spelling of 128977616622 in words is "one hundred twenty-eight billion, nine hundred seventy-seven million, six hundred sixteen thousand, six hundred twenty-two".