40108412408638 has 16 divisors (see below), whose sum is σ = 68757372794880. Its totient is φ = 17189296008696.

The previous prime is 40108412408629. The next prime is 40108412408683. The reversal of 40108412408638 is 83680421480104.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40108412408591 and 40108412408600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12035283 + ... + 15002161.

It is an arithmetic number, because the mean of its divisors is an integer number (4297335799680).

Almost surely, 2^{40108412408638} is an apocalyptic number.

40108412408638 is a deficient number, since it is larger than the sum of its proper divisors (28648960386242).

40108412408638 is a wasteful number, since it uses less digits than its factorization.

40108412408638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932511.

The product of its (nonzero) digits is 1179648, while the sum is 49.

The spelling of 40108412408638 in words is "forty trillion, one hundred eight billion, four hundred twelve million, four hundred eight thousand, six hundred thirty-eight".