128206625806 has 16 divisors (see below), whose sum is σ = 229338561024. Its totient is φ = 52556753304.

The previous prime is 128206625801. The next prime is 128206625887. The reversal of 128206625806 is 608526602821.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128206625801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199078290 + ... + 199078933.

It is an arithmetic number, because the mean of its divisors is an integer number (14333660064).

Almost surely, 2^128206625806 is an apocalyptic number.

128206625806 is a deficient number, since it is larger than the sum of its proper divisors (101131935218).

128206625806 is a wasteful number, since it uses less digits than its factorization.

128206625806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398157255.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 128206625806 in words is "one hundred twenty-eight billion, two hundred six million, six hundred twenty-five thousand, eight hundred six".