40971892049 has 32 divisors (see below), whose sum is σ = 49850380800. Its totient is φ = 33188624640.

The previous prime is 40971892043. The next prime is 40971892067. The reversal of 40971892049 is 94029817904.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40971892049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40971892043) 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 31 ways as a sum of consecutive naturals, for example, 7028474 + ... + 7034300.

It is an arithmetic number, because the mean of its divisors is an integer number (1557824400).

Almost surely, 2^40971892049 is an apocalyptic number.

It is an amenable number.

40971892049 is a deficient number, since it is larger than the sum of its proper divisors (8878488751).

40971892049 is a wasteful number, since it uses less digits than its factorization.

40971892049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7853.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 40971892049 in words is "forty billion, nine hundred seventy-one million, eight hundred ninety-two thousand, forty-nine".