916997786293 has 2 divisors, whose sum is σ = 916997786294. Its totient is φ = 916997786292.

The previous prime is 916997786279. The next prime is 916997786321. The reversal of 916997786293 is 392687799619.

916997786293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 637789112689 + 279208673604 = 798617^2 + 528402^2 .

It is a cyclic number.

It is not a de Polignac number, because 916997786293 - 2¹³ = 916997778101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (916997786203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458498893146 + 458498893147.

It is an arithmetic number, because the mean of its divisors is an integer number (458498893147).

Almost surely, 2^916997786293 is an apocalyptic number.

It is an amenable number.

916997786293 is a deficient number, since it is larger than the sum of its proper divisors (1).

916997786293 is an equidigital number, since it uses as much as digits as its factorization.

916997786293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 555532992, while the sum is 76.

The spelling of 916997786293 in words is "nine hundred sixteen billion, nine hundred ninety-seven million, seven hundred eighty-six thousand, two hundred ninety-three".