40891148812 has 12 divisors (see below), whose sum is σ = 71587275480. Its totient is φ = 20437641536.

The previous prime is 40891148803. The next prime is 40891148833. The reversal of 40891148812 is 21884119804.

It is a super-2 number, since 2×40891148812² (a number of 22 digits) contains 22 as substring.

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, 1971613 + ... + 1992244.

It is an arithmetic number, because the mean of its divisors is an integer number (5965606290).

Almost surely, 2^40891148812 is an apocalyptic number.

It is an amenable number.

40891148812 is a deficient number, since it is larger than the sum of its proper divisors (30696126668).

40891148812 is a wasteful number, since it uses less digits than its factorization.

40891148812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3966440 (or 3966438 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 46.

The spelling of 40891148812 in words is "forty billion, eight hundred ninety-one million, one hundred forty-eight thousand, eight hundred twelve".