40642321631212 has 48 divisors (see below), whose sum is σ = 86393340633600. Its totient is φ = 16331208590592.

The previous prime is 40642321631189. The next prime is 40642321631213. The reversal of 40642321631212 is 21213612324604.

It is not an unprimeable number, because it can be changed into a prime (40642321631213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162199962 + ... + 162450337.

It is an arithmetic number, because the mean of its divisors is an integer number (1799861263200).

Almost surely, 2^{40642321631212} is an apocalyptic number.

It is an amenable number.

40642321631212 is an abundant number, since it is smaller than the sum of its proper divisors (45751019002388).

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

40642321631212 is a wasteful number, since it uses less digits than its factorization.

40642321631212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324650590 (or 324650588 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

Adding to 40642321631212 its reverse (21213612324604), we get a palindrome (61855933955816).

The spelling of 40642321631212 in words is "forty trillion, six hundred forty-two billion, three hundred twenty-one million, six hundred thirty-one thousand, two hundred twelve".