40861281398 has 12 divisors (see below), whose sum is σ = 71298766692. Its totient is φ = 17511977700.

The previous prime is 40861281397. The next prime is 40861281403. The reversal of 40861281398 is 89318216804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40861281397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 208475828 + ... + 208476023.

It is an arithmetic number, because the mean of its divisors is an integer number (5941563891).

Almost surely, 2^40861281398 is an apocalyptic number.

40861281398 is a deficient number, since it is larger than the sum of its proper divisors (30437485294).

40861281398 is a wasteful number, since it uses less digits than its factorization.

40861281398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416951867 (or 416951860 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 40861281398 in words is "forty billion, eight hundred sixty-one million, two hundred eighty-one thousand, three hundred ninety-eight".