127630556081 has 16 divisors (see below), whose sum is σ = 149292211200. Its totient is φ = 106827326928.

The previous prime is 127630556063. The next prime is 127630556087. The reversal of 127630556081 is 180655036721.

It is a de Polignac number, because none of the positive numbers 2^k-127630556081 is a prime.

It is a super-2 number, since 2×127630556081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127630556087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1232180 + ... + 1331738.

It is an arithmetic number, because the mean of its divisors is an integer number (9330763200).

Almost surely, 2^127630556081 is an apocalyptic number.

It is an amenable number.

127630556081 is a deficient number, since it is larger than the sum of its proper divisors (21661655119).

127630556081 is an equidigital number, since it uses as much as digits as its factorization.

127630556081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103868.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 127630556081 in words is "one hundred twenty-seven billion, six hundred thirty million, five hundred fifty-six thousand, eighty-one".