40256635401 has 12 divisors (see below), whose sum is σ = 59720054212. Its totient is φ = 26112411936.

The previous prime is 40256635369. The next prime is 40256635417. The reversal of 40256635401 is 10453665204.

40256635401 is a `hidden beast` number, since 4 + 0 + 2 + 56 + 63 + 540 + 1 = 666.

40256635401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 24422188176 + 15834447225 = 156276^2 + 125835^2 .

It is not a de Polignac number, because 40256635401 - 2⁵ = 40256635369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40256634401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60445066 + ... + 60445731.

Almost surely, 2^40256635401 is an apocalyptic number.

It is an amenable number.

40256635401 is a deficient number, since it is larger than the sum of its proper divisors (19463418811).

40256635401 is a wasteful number, since it uses less digits than its factorization.

40256635401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120890840 (or 120890837 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 40256635401 in words is "forty billion, two hundred fifty-six million, six hundred thirty-five thousand, four hundred one".