40036420654637 has 4 divisors (see below), whose sum is σ = 43676095259616. Its totient is φ = 36396746049660.

The previous prime is 40036420654597. The next prime is 40036420654757. The reversal of 40036420654637 is 73645602463004.

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 40036420654637 - 2¹⁰ = 40036420653613 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 (40036420654337) 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, 1819837302473 + ... + 1819837302494.

It is an arithmetic number, because the mean of its divisors is an integer number (10919023814904).

Almost surely, 2^{40036420654637} is an apocalyptic number.

It is an amenable number.

40036420654637 is a deficient number, since it is larger than the sum of its proper divisors (3639674604979).

40036420654637 is a wasteful number, since it uses less digits than its factorization.

40036420654637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639674604978.

The product of its (nonzero) digits is 8709120, while the sum is 50.

The spelling of 40036420654637 in words is "forty trillion, thirty-six billion, four hundred twenty million, six hundred fifty-four thousand, six hundred thirty-seven".