85866901503 has 16 divisors (see below), whose sum is σ = 116521208832. Its totient is φ = 56231100000.

The previous prime is 85866901487. The next prime is 85866901543. The reversal of 85866901503 is 30510966858.

It is not a de Polignac number, because 85866901503 - 2⁴ = 85866901487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85866901543) 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, 174963 + ... + 449828.

It is an arithmetic number, because the mean of its divisors is an integer number (7282575552).

Almost surely, 2^85866901503 is an apocalyptic number.

85866901503 is a deficient number, since it is larger than the sum of its proper divisors (30654307329).

85866901503 is a wasteful number, since it uses less digits than its factorization.

85866901503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625606.

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 85866901503 in words is "eighty-five billion, eight hundred sixty-six million, nine hundred one thousand, five hundred three".