9116049456421 has 4 divisors (see below), whose sum is σ = 9132899825644. Its totient is φ = 9099199087200.

The previous prime is 9116049456401. The next prime is 9116049456427. The reversal of 9116049456421 is 1246549406119.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5582063044321 + 3533986412100 = 2362639^2 + 1879890^2 .

It is a cyclic number.

It is not a de Polignac number, because 9116049456421 - 2²³ = 9116041067813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9116049456427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8425183800 + ... + 8425184881.

It is an arithmetic number, because the mean of its divisors is an integer number (2283224956411).

Almost surely, 2^{9116049456421} is an apocalyptic number.

It is an amenable number.

9116049456421 is a deficient number, since it is larger than the sum of its proper divisors (16850369223).

9116049456421 is a wasteful number, since it uses less digits than its factorization.

9116049456421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16850369222.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 9116049456421 in words is "nine trillion, one hundred sixteen billion, forty-nine million, four hundred fifty-six thousand, four hundred twenty-one".