85920721826 has 8 divisors (see below), whose sum is σ = 135664297680. Its totient is φ = 40699289268.

The previous prime is 85920721823. The next prime is 85920721829. The reversal of 85920721826 is 62812702958.

It is an interprime number because it is at equal distance from previous prime (85920721823) and next prime (85920721829).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (85920721823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1130535776 + ... + 1130535851.

It is an arithmetic number, because the mean of its divisors is an integer number (16958037210).

Almost surely, 2^85920721826 is an apocalyptic number.

85920721826 is a deficient number, since it is larger than the sum of its proper divisors (49743575854).

85920721826 is a wasteful number, since it uses less digits than its factorization.

85920721826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261071648.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 85920721826 in words is "eighty-five billion, nine hundred twenty million, seven hundred twenty-one thousand, eight hundred twenty-six".