85653897442 has 4 divisors (see below), whose sum is σ = 128480846166. Its totient is φ = 42826948720.

The previous prime is 85653897383. The next prime is 85653897443. The reversal of 85653897442 is 24479835658.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 83347112601 + 2306784841 = 288699^2 + 48029^2 .

It is not an unprimeable number, because it can be changed into a prime (85653897443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21413474359 + ... + 21413474362.

Almost surely, 2^85653897442 is an apocalyptic number.

85653897442 is a deficient number, since it is larger than the sum of its proper divisors (42826948724).

85653897442 is a wasteful number, since it uses less digits than its factorization.

85653897442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42826948723.

The product of its digits is 58060800, while the sum is 61.

The spelling of 85653897442 in words is "eighty-five billion, six hundred fifty-three million, eight hundred ninety-seven thousand, four hundred forty-two".