5438566753691 has 4 divisors (see below), whose sum is σ = 5440048251984. Its totient is φ = 5437085255400.

The previous prime is 5438566753663. The next prime is 5438566753733. The reversal of 5438566753691 is 1963576658345.

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

It is a cyclic number.

It is not a de Polignac number, because 5438566753691 - 2²² = 5438562559387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5438566753651) 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, 740743640 + ... + 740750981.

It is an arithmetic number, because the mean of its divisors is an integer number (1360012062996).

Almost surely, 2^{5438566753691} is an apocalyptic number.

5438566753691 is a deficient number, since it is larger than the sum of its proper divisors (1481498293).

5438566753691 is a wasteful number, since it uses less digits than its factorization.

5438566753691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481498292.

The product of its digits is 489888000, while the sum is 68.

The spelling of 5438566753691 in words is "five trillion, four hundred thirty-eight billion, five hundred sixty-six million, seven hundred fifty-three thousand, six hundred ninety-one".