2690142814921 has 4 divisors (see below), whose sum is σ = 2716260706432. Its totient is φ = 2664024923412.

The previous prime is 2690142814913. The next prime is 2690142814999. The reversal of 2690142814921 is 1294182410962.

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 not a de Polignac number, because 2690142814921 - 2³ = 2690142814913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2690142814721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13058945601 + ... + 13058945806.

It is an arithmetic number, because the mean of its divisors is an integer number (679065176608).

Almost surely, 2^{2690142814921} is an apocalyptic number.

It is an amenable number.

2690142814921 is a deficient number, since it is larger than the sum of its proper divisors (26117891511).

2690142814921 is a wasteful number, since it uses less digits than its factorization.

2690142814921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26117891510.

The product of its (nonzero) digits is 497664, while the sum is 49.

The spelling of 2690142814921 in words is "two trillion, six hundred ninety billion, one hundred forty-two million, eight hundred fourteen thousand, nine hundred twenty-one".