127154922640 has 40 divisors (see below), whose sum is σ = 295654201920. Its totient is φ = 50858699136.

The previous prime is 127154922623. The next prime is 127154922649. The reversal of 127154922640 is 46229451721.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (127154922649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1489597 + ... + 1572643.

It is an arithmetic number, because the mean of its divisors is an integer number (7391355048).

Almost surely, 2^127154922640 is an apocalyptic number.

127154922640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127154922640 is an abundant number, since it is smaller than the sum of its proper divisors (168499279280).

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

127154922640 is a wasteful number, since it uses less digits than its factorization.

127154922640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102199 (or 102193 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 127154922640 in words is "one hundred twenty-seven billion, one hundred fifty-four million, nine hundred twenty-two thousand, six hundred forty".