53689691797 has 4 divisors (see below), whose sum is σ = 61359647776. Its totient is φ = 46019735820.

The previous prime is 53689691791. The next prime is 53689691801. The reversal of 53689691797 is 79719698635.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79719698635 = 5 ⋅15943939727.

It is a cyclic number.

It is not a de Polignac number, because 53689691797 - 2³ = 53689691789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53689691791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3834977979 + ... + 3834977992.

It is an arithmetic number, because the mean of its divisors is an integer number (15339911944).

Almost surely, 2^53689691797 is an apocalyptic number.

It is an amenable number.

53689691797 is a deficient number, since it is larger than the sum of its proper divisors (7669955979).

53689691797 is an equidigital number, since it uses as much as digits as its factorization.

53689691797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7669955978.

The product of its digits is 154314720, while the sum is 70.

The spelling of 53689691797 in words is "fifty-three billion, six hundred eighty-nine million, six hundred ninety-one thousand, seven hundred ninety-seven".