127351691390 has 128 divisors (see below), whose sum is σ = 293500800000. Its totient is φ = 39439370880.

The previous prime is 127351691351. The next prime is 127351691431. The reversal of 127351691390 is 93196153721.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5912861 + ... + 5934359.

It is an arithmetic number, because the mean of its divisors is an integer number (2292975000).

Almost surely, 2^127351691390 is an apocalyptic number.

127351691390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127351691390 is an abundant number, since it is smaller than the sum of its proper divisors (166149108610).

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

127351691390 is a wasteful number, since it uses less digits than its factorization.

127351691390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21695 (or 21681 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 47.

The spelling of 127351691390 in words is "one hundred twenty-seven billion, three hundred fifty-one million, six hundred ninety-one thousand, three hundred ninety".