40166063838 has 16 divisors (see below), whose sum is σ = 89257919760. Its totient is φ = 13388687928.

The previous prime is 40166063831. The next prime is 40166063851. The reversal of 40166063838 is 83836066104.

40166063838 is a `hidden beast` number, since 4 + 0 + 1 + 6 + 6 + 0 + 638 + 3 + 8 = 666.

It is a super-2 number, since 2×40166063838² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40166063793 and 40166063802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40166063831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371907945 + ... + 371908052.

It is an arithmetic number, because the mean of its divisors is an integer number (5578619985).

Almost surely, 2^40166063838 is an apocalyptic number.

40166063838 is an abundant number, since it is smaller than the sum of its proper divisors (49091855922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40166063838 is a wasteful number, since it uses less digits than its factorization.

40166063838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743816008 (or 743816002 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 40166063838 in words is "forty billion, one hundred sixty-six million, sixty-three thousand, eight hundred thirty-eight".