40385075671 has 4 divisors (see below), whose sum is σ = 40388107144. Its totient is φ = 40382044200.

The previous prime is 40385075659. The next prime is 40385075677. The reversal of 40385075671 is 17657058304.

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 40385075671 - 2¹⁷ = 40384944599 is a prime.

It is a super-2 number, since 2×40385075671² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40385075677) 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, 1495665 + ... + 1522426.

It is an arithmetic number, because the mean of its divisors is an integer number (10097026786).

Almost surely, 2^40385075671 is an apocalyptic number.

40385075671 is a deficient number, since it is larger than the sum of its proper divisors (3031473).

40385075671 is a wasteful number, since it uses less digits than its factorization.

40385075671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031472.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 40385075671 in words is "forty billion, three hundred eighty-five million, seventy-five thousand, six hundred seventy-one".