40871208638 has 32 divisors (see below), whose sum is σ = 68394231360. Its totient is φ = 18187868160.

The previous prime is 40871208571. The next prime is 40871208643. The reversal of 40871208638 is 83680217804.

It is a junction number, because it is equal to n+sod(n) for n = 40871208592 and 40871208601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510878 + ... + 585438.

It is an arithmetic number, because the mean of its divisors is an integer number (2137319730).

Almost surely, 2^40871208638 is an apocalyptic number.

40871208638 is a deficient number, since it is larger than the sum of its proper divisors (27523022722).

40871208638 is a wasteful number, since it uses less digits than its factorization.

40871208638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75332.

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 40871208638 in words is "forty billion, eight hundred seventy-one million, two hundred eight thousand, six hundred thirty-eight".