40531720015212 has 24 divisors (see below), whose sum is σ = 95771152780800. Its totient is φ = 13339553422416.

The previous prime is 40531720015177. The next prime is 40531720015223. The reversal of 40531720015212 is 21251002713504.

It is a happy number.

It is a super-2 number, since 2×40531720015212² (a number of 28 digits) contains 22 as substring.

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, 21377488512 + ... + 21377490407.

It is an arithmetic number, because the mean of its divisors is an integer number (3990464699200).

Almost surely, 2^{40531720015212} is an apocalyptic number.

It is an amenable number.

40531720015212 is an abundant number, since it is smaller than the sum of its proper divisors (55239432765588).

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

40531720015212 is a wasteful number, since it uses less digits than its factorization.

40531720015212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42754979005 (or 42754979003 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

Adding to 40531720015212 its reverse (21251002713504), we get a palindrome (61782722728716).

The spelling of 40531720015212 in words is "forty trillion, five hundred thirty-one billion, seven hundred twenty million, fifteen thousand, two hundred twelve".