40021120660312 has 16 divisors (see below), whose sum is σ = 81861383169000. Its totient is φ = 18191418481920.

The previous prime is 40021120660307. The next prime is 40021120660337. The reversal of 40021120660312 is 21306602112004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227392730937 + ... + 227392731112.

Almost surely, 2^{40021120660312} is an apocalyptic number.

It is an amenable number.

40021120660312 is an abundant number, since it is smaller than the sum of its proper divisors (41840262508688).

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

40021120660312 is a wasteful number, since it uses less digits than its factorization.

40021120660312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454785462066 (or 454785462062 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 40021120660312 its reverse (21306602112004), we get a palindrome (61327722772316).

The spelling of 40021120660312 in words is "forty trillion, twenty-one billion, one hundred twenty million, six hundred sixty thousand, three hundred twelve".