846826036621 has 2 divisors, whose sum is σ = 846826036622. Its totient is φ = 846826036620.

The previous prime is 846826036561. The next prime is 846826036633. The reversal of 846826036621 is 126630628648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 787345655625 + 59480380996 = 887325^2 + 243886^2 .

It is a cyclic number.

It is not a de Polignac number, because 846826036621 - 2³⁵ = 812466298253 is a prime.

It is a super-2 number, since 2×846826036621² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (846826036681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423413018310 + 423413018311.

It is an arithmetic number, because the mean of its divisors is an integer number (423413018311).

Almost surely, 2^846826036621 is an apocalyptic number.

It is an amenable number.

846826036621 is a deficient number, since it is larger than the sum of its proper divisors (1).

846826036621 is an equidigital number, since it uses as much as digits as its factorization.

846826036621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 846826036621 in words is "eight hundred forty-six billion, eight hundred twenty-six million, thirty-six thousand, six hundred twenty-one".