14850781990549 has 2 divisors, whose sum is σ = 14850781990550. Its totient is φ = 14850781990548.

The previous prime is 14850781990507. The next prime is 14850781990567. The reversal of 14850781990549 is 94509918705841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12120967584324 + 2729814406225 = 3481518^2 + 1652215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14850781990549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14850781990579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7425390995274 + 7425390995275.

It is an arithmetic number, because the mean of its divisors is an integer number (7425390995275).

Almost surely, 2^{14850781990549} is an apocalyptic number.

It is an amenable number.

14850781990549 is a deficient number, since it is larger than the sum of its proper divisors (1).

14850781990549 is an equidigital number, since it uses as much as digits as its factorization.

14850781990549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 130636800, while the sum is 70.

The spelling of 14850781990549 in words is "fourteen trillion, eight hundred fifty billion, seven hundred eighty-one million, nine hundred ninety thousand, five hundred forty-nine".