2691875437553 has 2 divisors, whose sum is σ = 2691875437554. Its totient is φ = 2691875437552.

The previous prime is 2691875437529. The next prime is 2691875437561. The reversal of 2691875437553 is 3557345781962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2689429442704 + 2445994849 = 1639948^2 + 49457^2 .

It is a cyclic number.

It is not a de Polignac number, because 2691875437553 - 2²⁰ = 2691874388977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2691875437553.

It is not a weakly prime, because it can be changed into another prime (2691875437583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345937718776 + 1345937718777.

It is an arithmetic number, because the mean of its divisors is an integer number (1345937718777).

Almost surely, 2^{2691875437553} is an apocalyptic number.

It is an amenable number.

2691875437553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2691875437553 is an equidigital number, since it uses as much as digits as its factorization.

2691875437553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512000, while the sum is 65.

The spelling of 2691875437553 in words is "two trillion, six hundred ninety-one billion, eight hundred seventy-five million, four hundred thirty-seven thousand, five hundred fifty-three".