40040138554 has 16 divisors (see below), whose sum is σ = 65740557960. Its totient is φ = 18177111360.

The previous prime is 40040138549. The next prime is 40040138561. The reversal of 40040138554 is 45583104004.

It can be written as a sum of positive squares in 4 ways, for example, as 24978222025 + 15061916529 = 158045^2 + 122727^2 .

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, 12621409 + ... + 12624580.

Almost surely, 2^40040138554 is an apocalyptic number.

40040138554 is a deficient number, since it is larger than the sum of its proper divisors (25700419406).

40040138554 is a wasteful number, since it uses less digits than its factorization.

40040138554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25246065.

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 40040138554 in words is "forty billion, forty million, one hundred thirty-eight thousand, five hundred fifty-four".