693748562708881 has 4 divisors (see below), whose sum is σ = 695965011791332. Its totient is φ = 691532113626432.

The previous prime is 693748562708837. The next prime is 693748562708891. The reversal of 693748562708881 is 188807265847396.

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 70305541825600 + 623443020883281 = 8384840^2 + 24968841^2 .

It is a cyclic number.

It is not a de Polignac number, because 693748562708881 - 2²³ = 693748554320273 is a prime.

It is a super-2 number, since 2×693748562708881² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 693748562708795 and 693748562708804.

It is not an unprimeable number, because it can be changed into a prime (693748562708891) 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, 1108224540756 + ... + 1108224541381.

It is an arithmetic number, because the mean of its divisors is an integer number (173991252947833).

It is a 1-persistent number, because it is pandigital, but 2⋅693748562708881 = 1387497125417762 is not.

Almost surely, 2^{693748562708881} is an apocalyptic number.

It is an amenable number.

693748562708881 is a deficient number, since it is larger than the sum of its proper divisors (2216449082451).

693748562708881 is a wasteful number, since it uses less digits than its factorization.

693748562708881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216449082450.

The product of its (nonzero) digits is 7803371520, while the sum is 82.

The spelling of 693748562708881 in words is "six hundred ninety-three trillion, seven hundred forty-eight billion, five hundred sixty-two million, seven hundred eight thousand, eight hundred eighty-one".