127091890432 has 36 divisors (see below), whose sum is σ = 273201745180. Its totient is φ = 58657794048.

The previous prime is 127091890427. The next prime is 127091890451. The reversal of 127091890432 is 234098190721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29837725696 + 97254164736 = 172736^2 + 311856^2 .

It is a super-2 number, since 2×127091890432² (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, 19091007 + ... + 19097662.

Almost surely, 2^127091890432 is an apocalyptic number.

It is an amenable number.

127091890432 is an abundant number, since it is smaller than the sum of its proper divisors (146109854748).

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

127091890432 is an equidigital number, since it uses as much as digits as its factorization.

127091890432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38188698 (or 38188684 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 127091890432 in words is "one hundred twenty-seven billion, ninety-one million, eight hundred ninety thousand, four hundred thirty-two".