127840561644 has 24 divisors (see below), whose sum is σ = 299455330608. Its totient is φ = 42447708160.

The previous prime is 127840561627. The next prime is 127840561711. The reversal of 127840561644 is 446165048721.

127840561644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×127840561644³ (a number of 34 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 127840561593 and 127840561602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20723337 + ... + 20729504.

It is an arithmetic number, because the mean of its divisors is an integer number (12477305442).

Almost surely, 2^127840561644 is an apocalyptic number.

It is an amenable number.

127840561644 is an abundant number, since it is smaller than the sum of its proper divisors (171614768964).

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

127840561644 is a wasteful number, since it uses less digits than its factorization.

127840561644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41453105 (or 41453103 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 127840561644 in words is "one hundred twenty-seven billion, eight hundred forty million, five hundred sixty-one thousand, six hundred forty-four".