40016655645 has 16 divisors (see below), whose sum is σ = 64903728192. Its totient is φ = 21049856640.

The previous prime is 40016655641. The next prime is 40016655677. The reversal of 40016655645 is 54655661004.

40016655645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40016655645 - 2² = 40016655641 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40016655597 and 40016655606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40016655641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18271351 + ... + 18273540.

It is an arithmetic number, because the mean of its divisors is an integer number (4056483012).

Almost surely, 2^40016655645 is an apocalyptic number.

It is an amenable number.

40016655645 is a deficient number, since it is larger than the sum of its proper divisors (24887072547).

40016655645 is a wasteful number, since it uses less digits than its factorization.

40016655645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36544972.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 40016655645 in words is "forty billion, sixteen million, six hundred fifty-five thousand, six hundred forty-five".