40121745235546 has 16 divisors (see below), whose sum is σ = 64812306825000. Its totient is φ = 18517655190528.

The previous prime is 40121745235543. The next prime is 40121745235573. The reversal of 40121745235546 is 64553254712104.

It can be written as a sum of positive squares in 4 ways, for example, as 36571953875625 + 3549791359921 = 6047475^2 + 1884089^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40121745235546.

It is not an unprimeable number, because it can be changed into a prime (40121745235543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3931330 + ... + 9782578.

Almost surely, 2^{40121745235546} is an apocalyptic number.

40121745235546 is a deficient number, since it is larger than the sum of its proper divisors (24690561589454).

40121745235546 is a wasteful number, since it uses less digits than its factorization.

40121745235546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6114993.

The product of its (nonzero) digits is 4032000, while the sum is 49.

The spelling of 40121745235546 in words is "forty trillion, one hundred twenty-one billion, seven hundred forty-five million, two hundred thirty-five thousand, five hundred forty-six".