40043537793801 has 40 divisors (see below), whose sum is σ = 59952684695904. Its totient is φ = 26635647337920.

The previous prime is 40043537793799. The next prime is 40043537793821. The reversal of 40043537793801 is 10839773534004.

40043537793801 is a `hidden beast` number, since 4 + 0 + 0 + 4 + 3 + 537 + 79 + 38 + 0 + 1 = 666.

It is not a de Polignac number, because 40043537793801 - 2¹ = 40043537793799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40043537793821) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1091353866 + ... + 1091390556.

Almost surely, 2^{40043537793801} is an apocalyptic number.

It is an amenable number.

40043537793801 is a deficient number, since it is larger than the sum of its proper divisors (19909146902103).

40043537793801 is a wasteful number, since it uses less digits than its factorization.

40043537793801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66643 (or 66634 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 40043537793801 in words is "forty trillion, forty-three billion, five hundred thirty-seven million, seven hundred ninety-three thousand, eight hundred one".