40001642513 has 4 divisors (see below), whose sum is σ = 45716162880. Its totient is φ = 34287122148.

The previous prime is 40001642441. The next prime is 40001642557. The reversal of 40001642513 is 31524610004.

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 40001642513 - 2⁸ = 40001642257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40001542513) 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, 2857260173 + ... + 2857260186.

It is an arithmetic number, because the mean of its divisors is an integer number (11429040720).

Almost surely, 2^40001642513 is an apocalyptic number.

It is an amenable number.

40001642513 is a deficient number, since it is larger than the sum of its proper divisors (5714520367).

40001642513 is an equidigital number, since it uses as much as digits as its factorization.

40001642513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5714520366.

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 40001642513 in words is "forty billion, one million, six hundred forty-two thousand, five hundred thirteen".