86542022418842 has 4 divisors (see below), whose sum is σ = 129813033628266. Its totient is φ = 43271011209420.

The previous prime is 86542022418829. The next prime is 86542022418847. The reversal of 86542022418842 is 24881422024568.

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., 66156896748721 + 20385125670121 = 8133689^2 + 4514989^2 .

It is a super-3 number, since 3×86542022418842³ (a number of 43 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (86542022418847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21635505604709 + ... + 21635505604712.

Almost surely, 2^{86542022418842} is an apocalyptic number.

86542022418842 is a deficient number, since it is larger than the sum of its proper divisors (43271011209424).

86542022418842 is a wasteful number, since it uses less digits than its factorization.

86542022418842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43271011209423.

The product of its (nonzero) digits is 15728640, while the sum is 56.

The spelling of 86542022418842 in words is "eighty-six trillion, five hundred forty-two billion, twenty-two million, four hundred eighteen thousand, eight hundred forty-two".