40816011618645 has 32 divisors (see below), whose sum is σ = 67582964632320. Its totient is φ = 21009989253120.

The previous prime is 40816011618643. The next prime is 40816011618647. The reversal of 40816011618645 is 54681611061804.

It is an interprime number because it is at equal distance from previous prime (40816011618643) and next prime (40816011618647).

It is not a de Polignac number, because 40816011618645 - 2¹ = 40816011618643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40816011618643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16501321 + ... + 18812910.

It is an arithmetic number, because the mean of its divisors is an integer number (2111967644760).

Almost surely, 2^{40816011618645} is an apocalyptic number.

It is an amenable number.

40816011618645 is a deficient number, since it is larger than the sum of its proper divisors (26766953013675).

40816011618645 is a wasteful number, since it uses less digits than its factorization.

40816011618645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35316925.

The product of its (nonzero) digits is 1105920, while the sum is 51.

The spelling of 40816011618645 in words is "forty trillion, eight hundred sixteen billion, eleven million, six hundred eighteen thousand, six hundred forty-five".