75693793721 has 16 divisors (see below), whose sum is σ = 93179850624. Its totient is φ = 59877857664.

The previous prime is 75693793699. The next prime is 75693793727. The reversal of 75693793721 is 12739739657.

It is a cyclic number.

It is not a de Polignac number, because 75693793721 - 2⁶ = 75693793657 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (75693793727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400970 + ... + 558716.

It is an arithmetic number, because the mean of its divisors is an integer number (5823740664).

Almost surely, 2^75693793721 is an apocalyptic number.

It is an amenable number.

75693793721 is a deficient number, since it is larger than the sum of its proper divisors (17486056903).

75693793721 is a wasteful number, since it uses less digits than its factorization.

75693793721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163040.

The product of its digits is 15002820, while the sum is 59.

The spelling of 75693793721 in words is "seventy-five billion, six hundred ninety-three million, seven hundred ninety-three thousand, seven hundred twenty-one".