85508277543 has 24 divisors (see below), whose sum is σ = 140837166288. Its totient is φ = 49525155072.

The previous prime is 85508277541. The next prime is 85508277551. The reversal of 85508277543 is 34577280558.

85508277543 is a `hidden beast` number, since 8 + 5 + 508 + 27 + 75 + 43 = 666.

It is not a de Polignac number, because 85508277543 - 2¹ = 85508277541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85508277543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85508277541) 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, 21493305 + ... + 21497282.

It is an arithmetic number, because the mean of its divisors is an integer number (5868215262).

Almost surely, 2^85508277543 is an apocalyptic number.

85508277543 is a deficient number, since it is larger than the sum of its proper divisors (55328888745).

85508277543 is a wasteful number, since it uses less digits than its factorization.

85508277543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42990623 (or 42990620 counting only the distinct ones).

The product of its (nonzero) digits is 9408000, while the sum is 54.

The spelling of 85508277543 in words is "eighty-five billion, five hundred eight million, two hundred seventy-seven thousand, five hundred forty-three".