2650002331621 has 2 divisors, whose sum is σ = 2650002331622. Its totient is φ = 2650002331620.

The previous prime is 2650002331601. The next prime is 2650002331661. The reversal of 2650002331621 is 1261332000562.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2283238859521 + 366763472100 = 1511039^2 + 605610^2 .

It is a cyclic number.

It is not a de Polignac number, because 2650002331621 - 2⁵ = 2650002331589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2650002331601) 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 as a sum of consecutive naturals, namely, 1325001165810 + 1325001165811.

It is an arithmetic number, because the mean of its divisors is an integer number (1325001165811).

Almost surely, 2^{2650002331621} is an apocalyptic number.

It is an amenable number.

2650002331621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2650002331621 is an equidigital number, since it uses as much as digits as its factorization.

2650002331621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 2650002331621 in words is "two trillion, six hundred fifty billion, two million, three hundred thirty-one thousand, six hundred twenty-one".