40234220012 has 24 divisors (see below), whose sum is σ = 80478836256. Its totient is φ = 17241009408.

The previous prime is 40234220009. The next prime is 40234220021. The reversal of 40234220012 is 21002243204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137828 + ... + 315380.

It is an arithmetic number, because the mean of its divisors is an integer number (3353284844).

Almost surely, 2^40234220012 is an apocalyptic number.

It is an amenable number.

40234220012 is an abundant number, since it is smaller than the sum of its proper divisors (40244616244).

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

40234220012 is a wasteful number, since it uses less digits than its factorization.

40234220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185657 (or 185655 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 40234220012 its reverse (21002243204), we get a palindrome (61236463216).

The spelling of 40234220012 in words is "forty billion, two hundred thirty-four million, two hundred twenty thousand, twelve".