27373775121401 has 4 divisors (see below), whose sum is σ = 27373785807732. Its totient is φ = 27373764435072.

The previous prime is 27373775121377. The next prime is 27373775121437. The reversal of 27373775121401 is 10412157737372.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 14605016365801 + 12768758755600 = 3821651^2 + 3573340^2 .

It is a cyclic number.

It is not a de Polignac number, because 27373775121401 - 2¹⁸ = 27373774859257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27373775121401.

It is not an unprimeable number, because it can be changed into a prime (27373775121001) 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, 1045181 + ... + 7472613.

It is an arithmetic number, because the mean of its divisors is an integer number (6843446451933).

Almost surely, 2^{27373775121401} is an apocalyptic number.

It is an amenable number.

27373775121401 is a deficient number, since it is larger than the sum of its proper divisors (10686331).

27373775121401 is an equidigital number, since it uses as much as digits as its factorization.

27373775121401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10686330.

The product of its (nonzero) digits is 1728720, while the sum is 50.

The spelling of 27373775121401 in words is "twenty-seven trillion, three hundred seventy-three billion, seven hundred seventy-five million, one hundred twenty-one thousand, four hundred one".