190987005128 has 16 divisors (see below), whose sum is σ = 358105331760. Its totient is φ = 95492250000.

The previous prime is 190987005119. The next prime is 190987005151. The reversal of 190987005128 is 821500789091.

It is a super-2 number, since 2×190987005128² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 959063 + ... + 1140953.

It is an arithmetic number, because the mean of its divisors is an integer number (22381583235).

Almost surely, 2^190987005128 is an apocalyptic number.

It is an amenable number.

190987005128 is a deficient number, since it is larger than the sum of its proper divisors (167118326632).

190987005128 is a wasteful number, since it uses less digits than its factorization.

190987005128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313148 (or 313144 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 50.

The spelling of 190987005128 in words is "one hundred ninety billion, nine hundred eighty-seven million, five thousand, one hundred twenty-eight".