15641295311947 has 2 divisors, whose sum is σ = 15641295311948. Its totient is φ = 15641295311946.

The previous prime is 15641295311933. The next prime is 15641295312001. The reversal of 15641295311947 is 74911359214651.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15641295311947 - 2²⁷ = 15641161094219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15641295311891 and 15641295311900.

It is not a weakly prime, because it can be changed into another prime (15641295311927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7820647655973 + 7820647655974.

It is an arithmetic number, because the mean of its divisors is an integer number (7820647655974).

Almost surely, 2^{15641295311947} is an apocalyptic number.

15641295311947 is a deficient number, since it is larger than the sum of its proper divisors (1).

15641295311947 is an equidigital number, since it uses as much as digits as its factorization.

15641295311947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 58.

The spelling of 15641295311947 in words is "fifteen trillion, six hundred forty-one billion, two hundred ninety-five million, three hundred eleven thousand, nine hundred forty-seven".