40355386516820 has 48 divisors (see below), whose sum is σ = 86518031705280. Its totient is φ = 15806813282304.

The previous prime is 40355386516759. The next prime is 40355386516877. The reversal of 40355386516820 is 2861568355304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66232694 + ... + 66839213.

It is an arithmetic number, because the mean of its divisors is an integer number (1802458993860).

Almost surely, 2^{40355386516820} is an apocalyptic number.

It is an amenable number.

40355386516820 is an abundant number, since it is smaller than the sum of its proper divisors (46162645188460).

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

40355386516820 is a wasteful number, since it uses less digits than its factorization.

40355386516820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133072232 (or 133072230 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 56.

The spelling of 40355386516820 in words is "forty trillion, three hundred fifty-five billion, three hundred eighty-six million, five hundred sixteen thousand, eight hundred twenty".