40122352138 has 8 divisors (see below), whose sum is σ = 65654758080. Its totient is φ = 18237432780.

The previous prime is 40122352063. The next prime is 40122352157. The reversal of 40122352138 is 83125322104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911871618 + ... + 911871661.

It is an arithmetic number, because the mean of its divisors is an integer number (8206844760).

Almost surely, 2^40122352138 is an apocalyptic number.

40122352138 is a deficient number, since it is larger than the sum of its proper divisors (25532405942).

40122352138 is a wasteful number, since it uses less digits than its factorization.

40122352138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823743292.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 40122352138 in words is "forty billion, one hundred twenty-two million, three hundred fifty-two thousand, one hundred thirty-eight".