40520383881 has 16 divisors (see below), whose sum is σ = 57214905408. Its totient is φ = 25420262400.

The previous prime is 40520383879. The next prime is 40520383903. The reversal of 40520383881 is 18838302504.

It is not a de Polignac number, because 40520383881 - 2¹ = 40520383879 is a prime.

It is a super-2 number, since 2×40520383881² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40520387881) 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, 252801 + ... + 380721.

It is an arithmetic number, because the mean of its divisors is an integer number (3575931588).

Almost surely, 2^40520383881 is an apocalyptic number.

It is an amenable number.

40520383881 is a deficient number, since it is larger than the sum of its proper divisors (16694521527).

40520383881 is a wasteful number, since it uses less digits than its factorization.

40520383881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134152.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 40520383881 in words is "forty billion, five hundred twenty million, three hundred eighty-three thousand, eight hundred eighty-one".