40684335549 has 32 divisors (see below), whose sum is σ = 63954691584. Its totient is φ = 22679974080.

The previous prime is 40684335541. The next prime is 40684335583. The reversal of 40684335549 is 94553348604.

It is not a de Polignac number, because 40684335549 - 2³ = 40684335541 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40684335541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46147 + ... + 288960.

It is an arithmetic number, because the mean of its divisors is an integer number (1998584112).

Almost surely, 2^40684335549 is an apocalyptic number.

It is an amenable number.

40684335549 is a deficient number, since it is larger than the sum of its proper divisors (23270356035).

40684335549 is a wasteful number, since it uses less digits than its factorization.

40684335549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335417.

The product of its (nonzero) digits is 6220800, while the sum is 51.

The spelling of 40684335549 in words is "forty billion, six hundred eighty-four million, three hundred thirty-five thousand, five hundred forty-nine".