85542887517 has 16 divisors (see below), whose sum is σ = 120450129408. Its totient is φ = 53891866160.

The previous prime is 85542887459. The next prime is 85542887561. The reversal of 85542887517 is 71578824558.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 85542887517 - 2¹⁶ = 85542821981 is a prime.

It is a super-2 number, since 2×85542887517² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85542887587) 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, 7462659 + ... + 7474112.

It is an arithmetic number, because the mean of its divisors is an integer number (7528133088).

Almost surely, 2^85542887517 is an apocalyptic number.

It is an amenable number.

85542887517 is a deficient number, since it is larger than the sum of its proper divisors (34907241891).

85542887517 is a wasteful number, since it uses less digits than its factorization.

85542887517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14936880.

The product of its digits is 25088000, while the sum is 60.

The spelling of 85542887517 in words is "eighty-five billion, five hundred forty-two million, eight hundred eighty-seven thousand, five hundred seventeen".