40647804058681 has 4 divisors (see below), whose sum is σ = 40647837731200. Its totient is φ = 40647770386164.

The previous prime is 40647804058679. The next prime is 40647804058721. The reversal of 40647804058681 is 18685040874604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40647804058681 - 2¹ = 40647804058679 is a prime.

It is a super-3 number, since 3×40647804058681³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40647804058661) 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, 14955501 + ... + 17463178.

It is an arithmetic number, because the mean of its divisors is an integer number (10161959432800).

Almost surely, 2^{40647804058681} is an apocalyptic number.

It is an amenable number.

40647804058681 is a deficient number, since it is larger than the sum of its proper divisors (33672519).

40647804058681 is a wasteful number, since it uses less digits than its factorization.

40647804058681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33672518.

The product of its (nonzero) digits is 41287680, while the sum is 61.

The spelling of 40647804058681 in words is "forty trillion, six hundred forty-seven billion, eight hundred four million, fifty-eight thousand, six hundred eighty-one".