75230665731 has 48 divisors (see below), whose sum is σ = 122723808480. Its totient is φ = 45775445760.

The previous prime is 75230665693. The next prime is 75230665747. The reversal of 75230665731 is 13756603257.

75230665731 is a `hidden beast` number, since 75 + 2 + 3 + 0 + 6 + 6 + 573 + 1 = 666.

It is not a de Polignac number, because 75230665731 - 2¹⁵ = 75230632963 is a prime.

It is a super-2 number, since 2×75230665731² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75230665751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 147361 + ... + 414941.

It is an arithmetic number, because the mean of its divisors is an integer number (2556746010).

Almost surely, 2^75230665731 is an apocalyptic number.

75230665731 is a deficient number, since it is larger than the sum of its proper divisors (47493142749).

75230665731 is a wasteful number, since it uses less digits than its factorization.

75230665731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267698 (or 267686 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 45.

The spelling of 75230665731 in words is "seventy-five billion, two hundred thirty million, six hundred sixty-five thousand, seven hundred thirty-one".