42786818406 has 24 divisors (see below), whose sum is σ = 96138284424. Its totient is φ = 14262272640.

The previous prime is 42786818401. The next prime is 42786818411. The reversal of 42786818406 is 60481868724.

42786818406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42786818401) and next prime (42786818411).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42786818401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44018875 + ... + 44019846.

It is an arithmetic number, because the mean of its divisors is an integer number (4005761851).

Almost surely, 2^42786818406 is an apocalyptic number.

42786818406 is an abundant number, since it is smaller than the sum of its proper divisors (53351466018).

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

42786818406 is an equidigital number, since it uses as much as digits as its factorization.

42786818406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88038738 (or 88038726 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 42786818406 in words is "forty-two billion, seven hundred eighty-six million, eight hundred eighteen thousand, four hundred six".