40340256511 has 4 divisors (see below), whose sum is σ = 41430533752. Its totient is φ = 39249979272.

The previous prime is 40340256497. The next prime is 40340256529. The reversal of 40340256511 is 11565204304.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40340256511 - 2⁹ = 40340255999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40340256211) 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, 545138565 + ... + 545138638.

It is an arithmetic number, because the mean of its divisors is an integer number (10357633438).

Almost surely, 2^40340256511 is an apocalyptic number.

40340256511 is a deficient number, since it is larger than the sum of its proper divisors (1090277241).

40340256511 is a wasteful number, since it uses less digits than its factorization.

40340256511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090277240.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 40340256511 in words is "forty billion, three hundred forty million, two hundred fifty-six thousand, five hundred eleven".