40510020413 has 4 divisors (see below), whose sum is σ = 40548565728. Its totient is φ = 40471475100.

The previous prime is 40510020401. The next prime is 40510020427. The reversal of 40510020413 is 31402001504.

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 40510020413 - 2⁶ = 40510020349 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 (40510020433) 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, 19271081 + ... + 19273182.

It is an arithmetic number, because the mean of its divisors is an integer number (10137141432).

Almost surely, 2^40510020413 is an apocalyptic number.

It is an amenable number.

40510020413 is a deficient number, since it is larger than the sum of its proper divisors (38545315).

40510020413 is a wasteful number, since it uses less digits than its factorization.

40510020413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38545314.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 40510020413 its reverse (31402001504), we get a palindrome (71912021917).

The spelling of 40510020413 in words is "forty billion, five hundred ten million, twenty thousand, four hundred thirteen".