128363706366 has 64 divisors (see below), whose sum is σ = 295343290368. Its totient is φ = 36433133568.

The previous prime is 128363706343. The next prime is 128363706371. The reversal of 128363706366 is 663607363821.

It is a super-2 number, since 2×128363706366² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9635326 + ... + 9648638.

It is an arithmetic number, because the mean of its divisors is an integer number (4614738912).

Almost surely, 2^128363706366 is an apocalyptic number.

128363706366 is an abundant number, since it is smaller than the sum of its proper divisors (166979584002).

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

128363706366 is a wasteful number, since it uses less digits than its factorization.

128363706366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14825.

The product of its (nonzero) digits is 3919104, while the sum is 51.

The spelling of 128363706366 in words is "one hundred twenty-eight billion, three hundred sixty-three million, seven hundred six thousand, three hundred sixty-six".