40005287513 has 4 divisors (see below), whose sum is σ = 40014336768. Its totient is φ = 39996238260.

The previous prime is 40005287503. The next prime is 40005287533. The reversal of 40005287513 is 31578250004.

It is a happy number.

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 40005287513 - 2⁶ = 40005287449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40005287503) 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, 4517993 + ... + 4526838.

It is an arithmetic number, because the mean of its divisors is an integer number (10003584192).

Almost surely, 2^40005287513 is an apocalyptic number.

It is an amenable number.

40005287513 is a deficient number, since it is larger than the sum of its proper divisors (9049255).

40005287513 is an equidigital number, since it uses as much as digits as its factorization.

40005287513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9049254.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 40005287513 in words is "forty billion, five million, two hundred eighty-seven thousand, five hundred thirteen".