85563405784 has 32 divisors (see below), whose sum is σ = 165625257600. Its totient is φ = 41396981760.

The previous prime is 85563405779. The next prime is 85563405787. The reversal of 85563405784 is 48750436558.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85563405787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3384262 + ... + 3409450.

It is an arithmetic number, because the mean of its divisors is an integer number (5175789300).

Almost surely, 2^85563405784 is an apocalyptic number.

It is an amenable number.

85563405784 is a deficient number, since it is larger than the sum of its proper divisors (80061851816).

85563405784 is a wasteful number, since it uses less digits than its factorization.

85563405784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38923 (or 38919 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 55.

The spelling of 85563405784 in words is "eighty-five billion, five hundred sixty-three million, four hundred five thousand, seven hundred eighty-four".