40694142666947 has 32 divisors (see below), whose sum is σ = 51816284651520. Its totient is φ = 31034297774880.

The previous prime is 40694142666913. The next prime is 40694142666953. The reversal of 40694142666947 is 74966624149604.

It is a cyclic number.

It is not a de Polignac number, because 40694142666947 - 2²² = 40694138472643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40694142666907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184628954 + ... + 184849232.

It is an arithmetic number, because the mean of its divisors is an integer number (1619258895360).

Almost surely, 2^{40694142666947} is an apocalyptic number.

40694142666947 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

40694142666947 is a deficient number, since it is larger than the sum of its proper divisors (11122141984573).

40694142666947 is a wasteful number, since it uses less digits than its factorization.

40694142666947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271391.

The product of its (nonzero) digits is 376233984, while the sum is 68.

The spelling of 40694142666947 in words is "forty trillion, six hundred ninety-four billion, one hundred forty-two million, six hundred sixty-six thousand, nine hundred forty-seven".