15966535099147 has 2 divisors, whose sum is σ = 15966535099148. Its totient is φ = 15966535099146.

The previous prime is 15966535099117. The next prime is 15966535099159. The reversal of 15966535099147 is 74199053566951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15966535099147 - 2²⁷ = 15966400881419 is a prime.

It is a super-2 number, since 2×15966535099147² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15966535099117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7983267549573 + 7983267549574.

It is an arithmetic number, because the mean of its divisors is an integer number (7983267549574).

Almost surely, 2^{15966535099147} is an apocalyptic number.

15966535099147 is a deficient number, since it is larger than the sum of its proper divisors (1).

15966535099147 is an equidigital number, since it uses as much as digits as its factorization.

15966535099147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 275562000, while the sum is 70.

The spelling of 15966535099147 in words is "fifteen trillion, nine hundred sixty-six billion, five hundred thirty-five million, ninety-nine thousand, one hundred forty-seven".