75127131669 has 8 divisors (see below), whose sum is σ = 100378632960. Its totient is φ = 49980192416.

The previous prime is 75127131647. The next prime is 75127131683. The reversal of 75127131669 is 96613172157.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75127131669 - 2²⁰ = 75126083093 is a prime.

It is a super-2 number, since 2×75127131669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75127132669) 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, 26138832 + ... + 26141705.

It is an arithmetic number, because the mean of its divisors is an integer number (12547329120).

Almost surely, 2^75127131669 is an apocalyptic number.

It is an amenable number.

75127131669 is a deficient number, since it is larger than the sum of its proper divisors (25251501291).

75127131669 is a wasteful number, since it uses less digits than its factorization.

75127131669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52281019.

The product of its digits is 476280, while the sum is 48.

The spelling of 75127131669 in words is "seventy-five billion, one hundred twenty-seven million, one hundred thirty-one thousand, six hundred sixty-nine".