86442436357 has 4 divisors (see below), whose sum is σ = 86556627916. Its totient is φ = 86328244800.

The previous prime is 86442436337. The next prime is 86442436363. The reversal of 86442436357 is 75363424468.

It is a happy number.

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 61620118756 + 24822317601 = 248234^2 + 157551^2 .

It is a cyclic number.

It is not a de Polignac number, because 86442436357 - 2⁷ = 86442436229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86442436337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57094644 + ... + 57096157.

It is an arithmetic number, because the mean of its divisors is an integer number (21639156979).

Almost surely, 2^86442436357 is an apocalyptic number.

It is an amenable number.

86442436357 is a deficient number, since it is larger than the sum of its proper divisors (114191559).

86442436357 is a wasteful number, since it uses less digits than its factorization.

86442436357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114191558.

The product of its digits is 11612160, while the sum is 52.

The spelling of 86442436357 in words is "eighty-six billion, four hundred forty-two million, four hundred thirty-six thousand, three hundred fifty-seven".