826531622449 has 4 divisors (see below), whose sum is σ = 890110978036. Its totient is φ = 762952266864.

The previous prime is 826531622443. The next prime is 826531622459. The reversal of 826531622449 is 944226135628.

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 158298945424 + 668232677025 = 397868^2 + 817455^2 .

It is a cyclic number.

It is not a de Polignac number, because 826531622449 - 2²⁵ = 826498068017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 826531622396 and 826531622405.

It is not an unprimeable number, because it can be changed into a prime (826531622443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31789677774 + ... + 31789677799.

It is an arithmetic number, because the mean of its divisors is an integer number (222527744509).

Almost surely, 2^826531622449 is an apocalyptic number.

It is an amenable number.

826531622449 is a deficient number, since it is larger than the sum of its proper divisors (63579355587).

826531622449 is a wasteful number, since it uses less digits than its factorization.

826531622449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63579355586.

The product of its digits is 4976640, while the sum is 52.

The spelling of 826531622449 in words is "eight hundred twenty-six billion, five hundred thirty-one million, six hundred twenty-two thousand, four hundred forty-nine".