15711864349 has 2 divisors, whose sum is σ = 15711864350. Its totient is φ = 15711864348.

The previous prime is 15711864347. The next prime is 15711864359. The reversal of 15711864349 is 94346811751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11446860100 + 4265004249 = 106990^2 + 65307^2 .

It is a cyclic number.

It is not a de Polignac number, because 15711864349 - 2¹ = 15711864347 is a prime.

Together with 15711864347, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15711864341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7855932174 + 7855932175.

It is an arithmetic number, because the mean of its divisors is an integer number (7855932175).

Almost surely, 2^15711864349 is an apocalyptic number.

It is an amenable number.

15711864349 is a deficient number, since it is larger than the sum of its proper divisors (1).

15711864349 is an equidigital number, since it uses as much as digits as its factorization.

15711864349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 49.

The spelling of 15711864349 in words is "fifteen billion, seven hundred eleven million, eight hundred sixty-four thousand, three hundred forty-nine".