40535885636065 has 64 divisors (see below), whose sum is σ = 52903547807040. Its totient is φ = 29696163840000.

The previous prime is 40535885636039. The next prime is 40535885636131. The reversal of 40535885636065 is 56063658853504.

It can be written as a sum of positive squares in 32 ways, for example, as 19451910426624 + 21083975209441 = 4410432^2 + 4591729^2 .

It is not a de Polignac number, because 40535885636065 - 2²³ = 40535877247457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40535885635988 and 40535885636006.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2113325775 + ... + 2113344955.

It is an arithmetic number, because the mean of its divisors is an integer number (826617934485).

Almost surely, 2^{40535885636065} is an apocalyptic number.

It is an amenable number.

40535885636065 is a deficient number, since it is larger than the sum of its proper divisors (12367662170975).

40535885636065 is a wasteful number, since it uses less digits than its factorization.

40535885636065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20854.

The product of its (nonzero) digits is 311040000, while the sum is 64.

The spelling of 40535885636065 in words is "forty trillion, five hundred thirty-five billion, eight hundred eighty-five million, six hundred thirty-six thousand, sixty-five".