55697758693 has 4 divisors (see below), whose sum is σ = 55698694828. Its totient is φ = 55696822560.

The previous prime is 55697758691. The next prime is 55697758723. The reversal of 55697758693 is 39685779655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17545121764 + 38152636929 = 132458^2 + 195327^2 .

It is a cyclic number.

It is not a de Polignac number, because 55697758693 - 2¹ = 55697758691 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55697758691) 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, 372288 + ... + 499993.

It is an arithmetic number, because the mean of its divisors is an integer number (13924673707).

Almost surely, 2^55697758693 is an apocalyptic number.

It is an amenable number.

55697758693 is a deficient number, since it is larger than the sum of its proper divisors (936135).

55697758693 is an equidigital number, since it uses as much as digits as its factorization.

55697758693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936134.

The product of its digits is 428652000, while the sum is 70.

The spelling of 55697758693 in words is "fifty-five billion, six hundred ninety-seven million, seven hundred fifty-eight thousand, six hundred ninety-three".