2664692121599 has 2 divisors, whose sum is σ = 2664692121600. Its totient is φ = 2664692121598.

The previous prime is 2664692121587. The next prime is 2664692121727. The reversal of 2664692121599 is 9951212964662.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2664692121599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2664692121569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332346060799 + 1332346060800.

It is an arithmetic number, because the mean of its divisors is an integer number (1332346060800).

Almost surely, 2^{2664692121599} is an apocalyptic number.

2664692121599 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664692121599 is an equidigital number, since it uses as much as digits as its factorization.

2664692121599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25194240, while the sum is 62.

The spelling of 2664692121599 in words is "two trillion, six hundred sixty-four billion, six hundred ninety-two million, one hundred twenty-one thousand, five hundred ninety-nine".