40520205867 has 16 divisors (see below), whose sum is σ = 55296476928. Its totient is φ = 26379000480.

The previous prime is 40520205841. The next prime is 40520205883. The reversal of 40520205867 is 76850202504.

40520205867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40520205867 - 2¹⁴ = 40520189483 is a prime.

It is a super-2 number, since 2×40520205867² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40520205827) 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, 544642 + ... + 614552.

It is an arithmetic number, because the mean of its divisors is an integer number (3456029808).

Almost surely, 2^40520205867 is an apocalyptic number.

40520205867 is a deficient number, since it is larger than the sum of its proper divisors (14776271061).

40520205867 is a wasteful number, since it uses less digits than its factorization.

40520205867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74450.

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 40520205867 in words is "forty billion, five hundred twenty million, two hundred five thousand, eight hundred sixty-seven".