40121635427607 has 4 divisors (see below), whose sum is σ = 53495513903480. Its totient is φ = 26747756951736.

The previous prime is 40121635427501. The next prime is 40121635427663. The reversal of 40121635427607 is 70672453612104.

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

It is not a de Polignac number, because 40121635427607 - 2¹⁰ = 40121635426583 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 (40121635427677) 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, 6686939237932 + ... + 6686939237937.

It is an arithmetic number, because the mean of its divisors is an integer number (13373878475870).

Almost surely, 2^{40121635427607} is an apocalyptic number.

40121635427607 is a deficient number, since it is larger than the sum of its proper divisors (13373878475873).

40121635427607 is a wasteful number, since it uses less digits than its factorization.

40121635427607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13373878475872.

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 40121635427607 in words is "forty trillion, one hundred twenty-one billion, six hundred thirty-five million, four hundred twenty-seven thousand, six hundred seven".