191872606128 has 60 divisors (see below), whose sum is σ = 576596767320. Its totient is φ = 54820743936.

The previous prime is 191872606091. The next prime is 191872606217. The reversal of 191872606128 is 821606278191.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40786893 + ... + 40791596.

It is an arithmetic number, because the mean of its divisors is an integer number (9609946122).

Almost surely, 2^191872606128 is an apocalyptic number.

It is an amenable number.

191872606128 is an abundant number, since it is smaller than the sum of its proper divisors (384724161192).

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

191872606128 is a wasteful number, since it uses less digits than its factorization.

191872606128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81578514 (or 81578501 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 51.

The spelling of 191872606128 in words is "one hundred ninety-one billion, eight hundred seventy-two million, six hundred six thousand, one hundred twenty-eight".