127165756720 has 20 divisors (see below), whose sum is σ = 295660384560. Its totient is φ = 50866302656.

The previous prime is 127165756657. The next prime is 127165756741. The reversal of 127165756720 is 27657561721.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×127165756720² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 794785900 + ... + 794786059.

It is an arithmetic number, because the mean of its divisors is an integer number (14783019228).

Almost surely, 2^127165756720 is an apocalyptic number.

127165756720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127165756720 is an abundant number, since it is smaller than the sum of its proper divisors (168494627840).

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

127165756720 is a wasteful number, since it uses less digits than its factorization.

127165756720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589571972 (or 1589571966 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 49.

The spelling of 127165756720 in words is "one hundred twenty-seven billion, one hundred sixty-five million, seven hundred fifty-six thousand, seven hundred twenty".