40520185039 has 4 divisors (see below), whose sum is σ = 40543222720. Its totient is φ = 40497147360.

The previous prime is 40520185031. The next prime is 40520185067. The reversal of 40520185039 is 93058102504.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40520185039 - 2³ = 40520185031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40520184989 and 40520185007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40520185031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11516202 + ... + 11519719.

It is an arithmetic number, because the mean of its divisors is an integer number (10135805680).

Almost surely, 2^40520185039 is an apocalyptic number.

40520185039 is a deficient number, since it is larger than the sum of its proper divisors (23037681).

40520185039 is a wasteful number, since it uses less digits than its factorization.

40520185039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23037680.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 40520185039 in words is "forty billion, five hundred twenty million, one hundred eighty-five thousand, thirty-nine".