127089889890 has 16 divisors (see below), whose sum is σ = 305015735808. Its totient is φ = 33890637296.

The previous prime is 127089889859. The next prime is 127089889921. The reversal of 127089889890 is 98988980721.

It is an interprime number because it is at equal distance from previous prime (127089889859) and next prime (127089889921).

It is a super-2 number, since 2×127089889890² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 2118164802 + ... + 2118164861.

It is an arithmetic number, because the mean of its divisors is an integer number (19063483488).

Almost surely, 2^127089889890 is an apocalyptic number.

127089889890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127089889890 is an abundant number, since it is smaller than the sum of its proper divisors (177925845918).

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

127089889890 is a wasteful number, since it uses less digits than its factorization.

127089889890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4236329673.

The product of its (nonzero) digits is 41803776, while the sum is 69.

The spelling of 127089889890 in words is "one hundred twenty-seven billion, eighty-nine million, eight hundred eighty-nine thousand, eight hundred ninety".