127349866123690 has 128 divisors (see below), whose sum is σ = 279512947445760. Its totient is φ = 40835864475648.

The previous prime is 127349866123673. The next prime is 127349866123699. The reversal of 127349866123690 is 96321668943721.

It is a super-2 number, since 2×127349866123690² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (127349866123699) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8049721 + ... + 17874499.

It is an arithmetic number, because the mean of its divisors is an integer number (2183694901920).

Almost surely, 2^{127349866123690} is an apocalyptic number.

127349866123690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127349866123690 is an abundant number, since it is smaller than the sum of its proper divisors (152163081322070).

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

127349866123690 is a wasteful number, since it uses less digits than its factorization.

127349866123690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9824996.

The product of its (nonzero) digits is 141087744, while the sum is 67.

The spelling of 127349866123690 in words is "one hundred twenty-seven trillion, three hundred forty-nine billion, eight hundred sixty-six million, one hundred twenty-three thousand, six hundred ninety".