85801428643 has 16 divisors (see below), whose sum is σ = 98637073920. Its totient is φ = 73111504896.

The previous prime is 85801428641. The next prime is 85801428649. The reversal of 85801428643 is 34682410858.

It is a cyclic number.

It is not a de Polignac number, because 85801428643 - 2¹ = 85801428641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85801428641) 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, 857488 + ... + 952306.

It is an arithmetic number, because the mean of its divisors is an integer number (6164817120).

Almost surely, 2^85801428643 is an apocalyptic number.

85801428643 is a deficient number, since it is larger than the sum of its proper divisors (12835645277).

85801428643 is a wasteful number, since it uses less digits than its factorization.

85801428643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95586.

The product of its (nonzero) digits is 1474560, while the sum is 49.

The spelling of 85801428643 in words is "eighty-five billion, eight hundred one million, four hundred twenty-eight thousand, six hundred forty-three".