15775991843011 has 2 divisors, whose sum is σ = 15775991843012. Its totient is φ = 15775991843010.

The previous prime is 15775991842999. The next prime is 15775991843081. The reversal of 15775991843011 is 11034819957751.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15775991843011 is a prime.

It is a super-2 number, since 2×15775991843011² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15775991843081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7887995921505 + 7887995921506.

It is an arithmetic number, because the mean of its divisors is an integer number (7887995921506).

Almost surely, 2^{15775991843011} is an apocalyptic number.

15775991843011 is a deficient number, since it is larger than the sum of its proper divisors (1).

15775991843011 is an equidigital number, since it uses as much as digits as its factorization.

15775991843011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9525600, while the sum is 61.

The spelling of 15775991843011 in words is "fifteen trillion, seven hundred seventy-five billion, nine hundred ninety-one million, eight hundred forty-three thousand, eleven".