127890406902 has 16 divisors (see below), whose sum is σ = 266901719040. Its totient is φ = 40776651432.

The previous prime is 127890406823. The next prime is 127890406909. The reversal of 127890406902 is 209604098721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127890406909) 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, 463370902 + ... + 463371177.

It is an arithmetic number, because the mean of its divisors is an integer number (16681357440).

Almost surely, 2^127890406902 is an apocalyptic number.

127890406902 is an abundant number, since it is smaller than the sum of its proper divisors (139011312138).

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

127890406902 is a wasteful number, since it uses less digits than its factorization.

127890406902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926742107.

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 127890406902 in words is "one hundred twenty-seven billion, eight hundred ninety million, four hundred six thousand, nine hundred two".