84858637445 has 4 divisors (see below), whose sum is σ = 101830364940. Its totient is φ = 67886909952.

The previous prime is 84858637427. The next prime is 84858637499. The reversal of 84858637445 is 54473685848.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57445543684 + 27413093761 = 239678^2 + 165569^2 .

It is a cyclic number.

It is not a de Polignac number, because 84858637445 - 2²⁰ = 84857588869 is a prime.

It is a super-2 number, since 2×84858637445² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8485863740 + ... + 8485863749.

It is an arithmetic number, because the mean of its divisors is an integer number (25457591235).

Almost surely, 2^84858637445 is an apocalyptic number.

It is an amenable number.

84858637445 is a deficient number, since it is larger than the sum of its proper divisors (16971727495).

84858637445 is a wasteful number, since it uses less digits than its factorization.

84858637445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16971727494.

The product of its digits is 103219200, while the sum is 62.

The spelling of 84858637445 in words is "eighty-four billion, eight hundred fifty-eight million, six hundred thirty-seven thousand, four hundred forty-five".