2693680359509 has 2 divisors, whose sum is σ = 2693680359510. Its totient is φ = 2693680359508.

The previous prime is 2693680359497. The next prime is 2693680359563. The reversal of 2693680359509 is 9059530863962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1395049178884 + 1298631180625 = 1181122^2 + 1139575^2 .

It is a cyclic number.

It is not a de Polignac number, because 2693680359509 - 2¹⁶ = 2693680293973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2693683359509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1346840179754 + 1346840179755.

It is an arithmetic number, because the mean of its divisors is an integer number (1346840179755).

Almost surely, 2^{2693680359509} is an apocalyptic number.

It is an amenable number.

2693680359509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2693680359509 is an equidigital number, since it uses as much as digits as its factorization.

2693680359509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94478400, while the sum is 65.

The spelling of 2693680359509 in words is "two trillion, six hundred ninety-three billion, six hundred eighty million, three hundred fifty-nine thousand, five hundred nine".