40243654161506 has 8 divisors (see below), whose sum is σ = 60365517290604. Its totient is φ = 20121815064640.

The previous prime is 40243654161457. The next prime is 40243654161509. The reversal of 40243654161506 is 60516145634204.

It can be written as a sum of positive squares in 2 ways, for example, as 32734360746025 + 7509293415481 = 5721395^2 + 2740309^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40243654161509) 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, 980075 + ... + 9024846.

Almost surely, 2^{40243654161506} is an apocalyptic number.

40243654161506 is a deficient number, since it is larger than the sum of its proper divisors (20121863129098).

40243654161506 is a wasteful number, since it uses less digits than its factorization.

40243654161506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12016116.

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 40243654161506 in words is "forty trillion, two hundred forty-three billion, six hundred fifty-four million, one hundred sixty-one thousand, five hundred six".