40138080212 has 24 divisors (see below), whose sum is σ = 71044281000. Its totient is φ = 19840536576.

The previous prime is 40138080209. The next prime is 40138080221. The reversal of 40138080212 is 21208083104.

It can be written as a sum of positive squares in 4 ways, for example, as 23961801616 + 16176278596 = 154796^2 + 127186^2 .

It is a super-2 number, since 2×40138080212² (a number of 22 digits) contains 22 as substring.

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, 93248 + ... + 298280.

It is an arithmetic number, because the mean of its divisors is an integer number (2960178375).

Almost surely, 2^40138080212 is an apocalyptic number.

It is an amenable number.

40138080212 is a deficient number, since it is larger than the sum of its proper divisors (30906200788).

40138080212 is a wasteful number, since it uses less digits than its factorization.

40138080212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205595 (or 205593 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The spelling of 40138080212 in words is "forty billion, one hundred thirty-eight million, eighty thousand, two hundred twelve".