40008140807477 has 4 divisors (see below), whose sum is σ = 40362195151020. Its totient is φ = 39654086463936.

The previous prime is 40008140807473. The next prime is 40008140807549. The reversal of 40008140807477 is 77470804180004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11710145596081 + 28297995211396 = 3422009^2 + 5319586^2 .

It is a cyclic number.

It is not a de Polignac number, because 40008140807477 - 2² = 40008140807473 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 (40008140807471) 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, 177027171602 + ... + 177027171827.

It is an arithmetic number, because the mean of its divisors is an integer number (10090548787755).

Almost surely, 2^{40008140807477} is an apocalyptic number.

It is an amenable number.

40008140807477 is a deficient number, since it is larger than the sum of its proper divisors (354054343543).

40008140807477 is a wasteful number, since it uses less digits than its factorization.

40008140807477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354054343542.

The product of its (nonzero) digits is 1404928, while the sum is 50.

The spelling of 40008140807477 in words is "forty trillion, eight billion, one hundred forty million, eight hundred seven thousand, four hundred seventy-seven".