40043561201 has 4 divisors (see below), whose sum is σ = 45764069952. Its totient is φ = 34323052452.

The previous prime is 40043561191. The next prime is 40043561209. The reversal of 40043561201 is 10216534004.

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 40043561201 - 2²⁶ = 39976452337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40043561209) 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, 2860254365 + ... + 2860254378.

It is an arithmetic number, because the mean of its divisors is an integer number (11441017488).

Almost surely, 2^40043561201 is an apocalyptic number.

It is an amenable number.

40043561201 is a deficient number, since it is larger than the sum of its proper divisors (5720508751).

40043561201 is an equidigital number, since it uses as much as digits as its factorization.

40043561201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5720508750.

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 40043561201 in words is "forty billion, forty-three million, five hundred sixty-one thousand, two hundred one".