127665437475 has 24 divisors (see below), whose sum is σ = 211894853040. Its totient is φ = 67823288320.

The previous prime is 127665437453. The next prime is 127665437477. The reversal of 127665437475 is 574734566721.

It is not a de Polignac number, because 127665437475 - 2¹⁷ = 127665306403 is a prime.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (127665437477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3292410 + ... + 3330959.

It is an arithmetic number, because the mean of its divisors is an integer number (8828952210).

Almost surely, 2^127665437475 is an apocalyptic number.

127665437475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

127665437475 is a deficient number, since it is larger than the sum of its proper divisors (84229415565).

127665437475 is a wasteful number, since it uses less digits than its factorization.

127665437475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6623639 (or 6623634 counting only the distinct ones).

The product of its digits is 29635200, while the sum is 57.

The spelling of 127665437475 in words is "one hundred twenty-seven billion, six hundred sixty-five million, four hundred thirty-seven thousand, four hundred seventy-five".