127750566690 has 80 divisors (see below), whose sum is σ = 344721503808. Its totient is φ = 33946379424.

The previous prime is 127750566683. The next prime is 127750566707. The reversal of 127750566690 is 96665057721.

It is a super-2 number, since 2×127750566690² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 49422 + ... + 507881.

Almost surely, 2^127750566690 is an apocalyptic number.

127750566690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 127750566690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172360751904).

127750566690 is an abundant number, since it is smaller than the sum of its proper divisors (216970937118).

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

127750566690 is a wasteful number, since it uses less digits than its factorization.

127750566690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557605 (or 557596 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The spelling of 127750566690 in words is "one hundred twenty-seven billion, seven hundred fifty million, five hundred sixty-six thousand, six hundred ninety".