826041691872 has 96 divisors (see below), whose sum is σ = 2465318338560. Its totient is φ = 268943794560.

The previous prime is 826041691837. The next prime is 826041691877. The reversal of 826041691872 is 278196140628.

It is a happy number.

826041691872 is a `hidden beast` number, since 8 + 2 + 60 + 416 + 91 + 87 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (826041691877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11079904 + ... + 11154207.

It is an arithmetic number, because the mean of its divisors is an integer number (25680399360).

Almost surely, 2^826041691872 is an apocalyptic number.

It is an amenable number.

826041691872 is an abundant number, since it is smaller than the sum of its proper divisors (1639276646688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

826041691872 is a wasteful number, since it uses less digits than its factorization.

826041691872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22234173 (or 22234159 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 826041691872 in words is "eight hundred twenty-six billion, forty-one million, six hundred ninety-one thousand, eight hundred seventy-two".