40689789718544 has 20 divisors (see below), whose sum is σ = 78843060179520. Its totient is φ = 20343193543200.

The previous prime is 40689789718541. The next prime is 40689789718549. The reversal of 40689789718544 is 44581798798604.

It is not an unprimeable number, because it can be changed into a prime (40689789718541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106134932 + ... + 106517619.

It is an arithmetic number, because the mean of its divisors is an integer number (3942153008976).

Almost surely, 2^{40689789718544} is an apocalyptic number.

It is an amenable number.

40689789718544 is a deficient number, since it is larger than the sum of its proper divisors (38153270460976).

40689789718544 is a wasteful number, since it uses less digits than its factorization.

40689789718544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212664518 (or 212664512 counting only the distinct ones).

The product of its (nonzero) digits is 3901685760, while the sum is 80.

The spelling of 40689789718544 in words is "forty trillion, six hundred eighty-nine billion, seven hundred eighty-nine million, seven hundred eighteen thousand, five hundred forty-four".