286637878842 has 64 divisors (see below), whose sum is σ = 658534195200. Its totient is φ = 81476777664.

The previous prime is 286637878837. The next prime is 286637878843. The reversal of 286637878842 is 248878736682.

It is a super-2 number, since 2×286637878842² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (286637878843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15903828 + ... + 15921840.

It is an arithmetic number, because the mean of its divisors is an integer number (10289596800).

Almost surely, 2^286637878842 is an apocalyptic number.

286637878842 is an abundant number, since it is smaller than the sum of its proper divisors (371896316358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

286637878842 is a wasteful number, since it uses less digits than its factorization.

286637878842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19947.

The product of its digits is 346816512, while the sum is 69.

The spelling of 286637878842 in words is "two hundred eighty-six billion, six hundred thirty-seven million, eight hundred seventy-eight thousand, eight hundred forty-two".