15494148847 has 2 divisors, whose sum is σ = 15494148848. Its totient is φ = 15494148846.

The previous prime is 15494148809. The next prime is 15494148863. The reversal of 15494148847 is 74884149451.

It is a strong prime.

It is an emirp because it is prime and its reverse (74884149451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15494148847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15494148877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7747074423 + 7747074424.

It is an arithmetic number, because the mean of its divisors is an integer number (7747074424).

Almost surely, 2^15494148847 is an apocalyptic number.

15494148847 is a deficient number, since it is larger than the sum of its proper divisors (1).

15494148847 is an equidigital number, since it uses as much as digits as its factorization.

15494148847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5160960, while the sum is 55.

The spelling of 15494148847 in words is "fifteen billion, four hundred ninety-four million, one hundred forty-eight thousand, eight hundred forty-seven".