40556353657 has 8 divisors (see below), whose sum is σ = 40847083200. Its totient is φ = 40265871600.

The previous prime is 40556353589. The next prime is 40556353667. The reversal of 40556353657 is 75635365504.

40556353657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40556353657 - 2⁷ = 40556353529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40556353657.

It is not an unprimeable number, because it can be changed into a prime (40556353667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273532 + ... + 394882.

It is an arithmetic number, because the mean of its divisors is an integer number (5105885400).

Almost surely, 2^40556353657 is an apocalyptic number.

It is an amenable number.

40556353657 is a deficient number, since it is larger than the sum of its proper divisors (290729543).

40556353657 is a wasteful number, since it uses less digits than its factorization.

40556353657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123743.

The product of its (nonzero) digits is 5670000, while the sum is 49.

The spelling of 40556353657 in words is "forty billion, five hundred fifty-six million, three hundred fifty-three thousand, six hundred fifty-seven".