15764794396643 has 2 divisors, whose sum is σ = 15764794396644. Its totient is φ = 15764794396642.

The previous prime is 15764794396639. The next prime is 15764794396697. The reversal of 15764794396643 is 34669349746751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15764794396643 - 2² = 15764794396639 is a prime.

It is not a weakly prime, because it can be changed into another prime (15764794396633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7882397198321 + 7882397198322.

It is an arithmetic number, because the mean of its divisors is an integer number (7882397198322).

Almost surely, 2^{15764794396643} is an apocalyptic number.

15764794396643 is a deficient number, since it is larger than the sum of its proper divisors (1).

15764794396643 is an equidigital number, since it uses as much as digits as its factorization.

15764794396643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2469035520, while the sum is 74.

The spelling of 15764794396643 in words is "fifteen trillion, seven hundred sixty-four billion, seven hundred ninety-four million, three hundred ninety-six thousand, six hundred forty-three".