40256503561671 has 8 divisors (see below), whose sum is σ = 53834612083824. Its totient is φ = 26758032040320.

The previous prime is 40256503561663. The next prime is 40256503561691. The reversal of 40256503561671 is 17616530565204.

It is a happy number.

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

It is not a de Polignac number, because 40256503561671 - 2³ = 40256503561663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40256503561691) 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, 19909249020 + ... + 19909251041.

It is an arithmetic number, because the mean of its divisors is an integer number (6729326510478).

Almost surely, 2^{40256503561671} is an apocalyptic number.

40256503561671 is a deficient number, since it is larger than the sum of its proper divisors (13578108522153).

40256503561671 is a wasteful number, since it uses less digits than its factorization.

40256503561671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39818500401.

The product of its (nonzero) digits is 4536000, while the sum is 51.

The spelling of 40256503561671 in words is "forty trillion, two hundred fifty-six billion, five hundred three million, five hundred sixty-one thousand, six hundred seventy-one".