128195250070 has 16 divisors (see below), whose sum is σ = 231922780848. Its totient is φ = 51017804320.

The previous prime is 128195250049. The next prime is 128195250083. The reversal of 128195250070 is 70052591821.

It is a congruent number.

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, 32534896 + ... + 32538835.

It is an arithmetic number, because the mean of its divisors is an integer number (14495173803).

Almost surely, 2^128195250070 is an apocalyptic number.

128195250070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128195250070 is a deficient number, since it is larger than the sum of its proper divisors (103727530778).

128195250070 is a wasteful number, since it uses less digits than its factorization.

128195250070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65073935.

The product of its (nonzero) digits is 50400, while the sum is 40.

The spelling of 128195250070 in words is "one hundred twenty-eight billion, one hundred ninety-five million, two hundred fifty thousand, seventy".