40043805261 has 8 divisors (see below), whose sum is σ = 53440415424. Its totient is φ = 26671532640.

The previous prime is 40043805251. The next prime is 40043805283. The reversal of 40043805261 is 16250834004.

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

It is not a de Polignac number, because 40043805261 - 2³⁰ = 38970063437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40043805251) 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, 6080545 + ... + 6087126.

It is an arithmetic number, because the mean of its divisors is an integer number (6680051928).

Almost surely, 2^40043805261 is an apocalyptic number.

It is an amenable number.

40043805261 is a deficient number, since it is larger than the sum of its proper divisors (13396610163).

40043805261 is a wasteful number, since it uses less digits than its factorization.

40043805261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12168771.

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 40043805261 in words is "forty billion, forty-three million, eight hundred five thousand, two hundred sixty-one".