2621693121433 has 4 divisors (see below), whose sum is σ = 2623188669748. Its totient is φ = 2620197573120.

The previous prime is 2621693121431. The next prime is 2621693121451. The reversal of 2621693121433 is 3341213961262.

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

It can be written as a sum of positive squares in 2 ways, for example, as 333468136089 + 2288224985344 = 577467^2 + 1512688^2 .

It is a cyclic number.

It is not a de Polignac number, because 2621693121433 - 2¹ = 2621693121431 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 2621693121433.

It is not an unprimeable number, because it can be changed into a prime (2621693121431) 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, 747771528 + ... + 747775033.

It is an arithmetic number, because the mean of its divisors is an integer number (655797167437).

Almost surely, 2^{2621693121433} is an apocalyptic number.

It is an amenable number.

2621693121433 is a deficient number, since it is larger than the sum of its proper divisors (1495548315).

2621693121433 is a wasteful number, since it uses less digits than its factorization.

2621693121433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495548314.

The product of its digits is 279936, while the sum is 43.

The spelling of 2621693121433 in words is "two trillion, six hundred twenty-one billion, six hundred ninety-three million, one hundred twenty-one thousand, four hundred thirty-three".