40818256609493 has 8 divisors (see below), whose sum is σ = 44581210042656. Its totient is φ = 37064003648400.

The previous prime is 40818256609477. The next prime is 40818256609511. The reversal of 40818256609493 is 39490665281804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40818256609493 - 2⁴ = 40818256609477 is a prime.

It is a super-2 number, since 2×40818256609493² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40818256609993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2175108203 + ... + 2175126968.

It is an arithmetic number, because the mean of its divisors is an integer number (5572651255332).

Almost surely, 2^{40818256609493} is an apocalyptic number.

It is an amenable number.

40818256609493 is a deficient number, since it is larger than the sum of its proper divisors (3762953433163).

40818256609493 is a wasteful number, since it uses less digits than its factorization.

40818256609493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350236035.

The product of its (nonzero) digits is 89579520, while the sum is 65.

The spelling of 40818256609493 in words is "forty trillion, eight hundred eighteen billion, two hundred fifty-six million, six hundred nine thousand, four hundred ninety-three".