826257472681 has 12 divisors (see below), whose sum is σ = 856772068672. Its totient is φ = 796795829424.

The previous prime is 826257472673. The next prime is 826257472687. The reversal of 826257472681 is 186274752628.

It is not a de Polignac number, because 826257472681 - 2³ = 826257472673 is a prime.

It is a super-3 number, since 3×826257472681³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (826257472687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95260 + ... + 1289026.

Almost surely, 2^826257472681 is an apocalyptic number.

It is an amenable number.

826257472681 is a deficient number, since it is larger than the sum of its proper divisors (30514595991).

826257472681 is a wasteful number, since it uses less digits than its factorization.

826257472681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194648 (or 1194619 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 58.

The spelling of 826257472681 in words is "eight hundred twenty-six billion, two hundred fifty-seven million, four hundred seventy-two thousand, six hundred eighty-one".