2689476373721 has 4 divisors (see below), whose sum is σ = 2689525929744. Its totient is φ = 2689426817700.

The previous prime is 2689476373699. The next prime is 2689476373747. The reversal of 2689476373721 is 1273736749862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2689476373721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2689476373751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24696515 + ... + 24805176.

It is an arithmetic number, because the mean of its divisors is an integer number (672381482436).

Almost surely, 2^{2689476373721} is an apocalyptic number.

It is an amenable number.

2689476373721 is a deficient number, since it is larger than the sum of its proper divisors (49556023).

2689476373721 is an equidigital number, since it uses as much as digits as its factorization.

2689476373721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49556022.

The product of its digits is 128024064, while the sum is 65.

The spelling of 2689476373721 in words is "two trillion, six hundred eighty-nine billion, four hundred seventy-six million, three hundred seventy-three thousand, seven hundred twenty-one".