40694212965571 has 4 divisors (see below), whose sum is σ = 44393686871544. Its totient is φ = 36994739059600.

The previous prime is 40694212965541. The next prime is 40694212965583. The reversal of 40694212965571 is 17556921249604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40694212965571 - 2¹⁵ = 40694212932803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40694212965541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1849736952970 + ... + 1849736952991.

It is an arithmetic number, because the mean of its divisors is an integer number (11098421717886).

Almost surely, 2^{40694212965571} is an apocalyptic number.

40694212965571 is a deficient number, since it is larger than the sum of its proper divisors (3699473905973).

40694212965571 is a wasteful number, since it uses less digits than its factorization.

40694212965571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699473905972.

The product of its (nonzero) digits is 32659200, while the sum is 61.

The spelling of 40694212965571 in words is "forty trillion, six hundred ninety-four billion, two hundred twelve million, nine hundred sixty-five thousand, five hundred seventy-one".