15548849843 has 2 divisors, whose sum is σ = 15548849844. Its totient is φ = 15548849842.

The previous prime is 15548849761. The next prime is 15548849863. The reversal of 15548849843 is 34894884551.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15548849843 is a prime.

It is a super-2 number, since 2×15548849843² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (15548849863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7774424921 + 7774424922.

It is an arithmetic number, because the mean of its divisors is an integer number (7774424922).

Almost surely, 2^15548849843 is an apocalyptic number.

15548849843 is a deficient number, since it is larger than the sum of its proper divisors (1).

15548849843 is an equidigital number, since it uses as much as digits as its factorization.

15548849843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22118400, while the sum is 59.

The spelling of 15548849843 in words is "fifteen billion, five hundred forty-eight million, eight hundred forty-nine thousand, eight hundred forty-three".