846247742591 has 2 divisors, whose sum is σ = 846247742592. Its totient is φ = 846247742590.

The previous prime is 846247742579. The next prime is 846247742657. The reversal of 846247742591 is 195247742648.

846247742591 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 is a cyclic number.

It is not a de Polignac number, because 846247742591 - 2¹⁰ = 846247741567 is a prime.

It is a super-2 number, since 2×846247742591² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 846247742591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (846247747591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423123871295 + 423123871296.

It is an arithmetic number, because the mean of its divisors is an integer number (423123871296).

Almost surely, 2^846247742591 is an apocalyptic number.

846247742591 is a deficient number, since it is larger than the sum of its proper divisors (1).

846247742591 is an equidigital number, since it uses as much as digits as its factorization.

846247742591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27095040, while the sum is 59.

The spelling of 846247742591 in words is "eight hundred forty-six billion, two hundred forty-seven million, seven hundred forty-two thousand, five hundred ninety-one".