85663078533 has 24 divisors (see below), whose sum is σ = 125997363648. Its totient is φ = 56074257792.

The previous prime is 85663078499. The next prime is 85663078583. The reversal of 85663078533 is 33587036658.

It is a happy number.

85663078533 is a `hidden beast` number, since 8 + 5 + 6 + 6 + 30 + 78 + 533 = 666.

It is not a de Polignac number, because 85663078533 - 2¹² = 85663074437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85663078533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85663078583) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 284785 + ... + 502422.

It is an arithmetic number, because the mean of its divisors is an integer number (5249890152).

Almost surely, 2^85663078533 is an apocalyptic number.

It is an amenable number.

85663078533 is a deficient number, since it is larger than the sum of its proper divisors (40334285115).

85663078533 is a wasteful number, since it uses less digits than its factorization.

85663078533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787433 (or 787430 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 85663078533 in words is "eighty-five billion, six hundred sixty-three million, seventy-eight thousand, five hundred thirty-three".