85649633563 has 32 divisors (see below), whose sum is σ = 99990616320. Its totient is φ = 72645672960.

The previous prime is 85649633539. The next prime is 85649633581. The reversal of 85649633563 is 36533694658.

It is a de Polignac number, because none of the positive numbers 2^k-85649633563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85649633498 and 85649633507.

It is not an unprimeable number, because it can be changed into a prime (85649633863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4238203 + ... + 4258363.

It is an arithmetic number, because the mean of its divisors is an integer number (3124706760).

Almost surely, 2^85649633563 is an apocalyptic number.

85649633563 is a deficient number, since it is larger than the sum of its proper divisors (14340982757).

85649633563 is a wasteful number, since it uses less digits than its factorization.

85649633563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20647.

The product of its digits is 41990400, while the sum is 58.

The spelling of 85649633563 in words is "eighty-five billion, six hundred forty-nine million, six hundred thirty-three thousand, five hundred sixty-three".