40056256613 has 16 divisors (see below), whose sum is σ = 43605734400. Its totient is φ = 36650132736.

The previous prime is 40056256609. The next prime is 40056256649. The reversal of 40056256613 is 31665265004.

It is a happy number.

40056256613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40056256613 - 2² = 40056256609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40056256663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49181 + ... + 287282.

It is an arithmetic number, because the mean of its divisors is an integer number (2725358400).

Almost surely, 2^40056256613 is an apocalyptic number.

It is an amenable number.

40056256613 is a deficient number, since it is larger than the sum of its proper divisors (3549477787).

40056256613 is a wasteful number, since it uses less digits than its factorization.

40056256613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336676.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 40056256613 in words is "forty billion, fifty-six million, two hundred fifty-six thousand, six hundred thirteen".