40365670515664 has 20 divisors (see below), whose sum is σ = 84224524057156. Its totient is φ = 18630309468672.

The previous prime is 40365670515629. The next prime is 40365670515721. The reversal of 40365670515664 is 46651507656304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15639715365264 + 24725955150400 = 3954708^2 + 4972520^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40365670515599 and 40365670515608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97032861609 + ... + 97032862024.

Almost surely, 2^{40365670515664} is an apocalyptic number.

It is an amenable number.

40365670515664 is an abundant number, since it is smaller than the sum of its proper divisors (43858853541492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40365670515664 is a wasteful number, since it uses less digits than its factorization.

40365670515664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194065723654 (or 194065723648 counting only the distinct ones).

The product of its (nonzero) digits is 54432000, while the sum is 58.

The spelling of 40365670515664 in words is "forty trillion, three hundred sixty-five billion, six hundred seventy million, five hundred fifteen thousand, six hundred sixty-four".