40163368820 has 24 divisors (see below), whose sum is σ = 84352381344. Its totient is φ = 16063574816.

The previous prime is 40163368793. The next prime is 40163368939. The reversal of 40163368820 is 2886336104.

It is a happy number.

It is a super-2 number, since 2×40163368820² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 83279 + ... + 295401.

It is an arithmetic number, because the mean of its divisors is an integer number (3514682556).

Almost surely, 2^40163368820 is an apocalyptic number.

It is an amenable number.

40163368820 is an abundant number, since it is smaller than the sum of its proper divisors (44189012524).

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

40163368820 is a wasteful number, since it uses less digits than its factorization.

40163368820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221599 (or 221597 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 40163368820 in words is "forty billion, one hundred sixty-three million, three hundred sixty-eight thousand, eight hundred twenty".