40644761136363 has 80 divisors (see below), whose sum is σ = 64927666964160. Its totient is φ = 25248880687104.

The previous prime is 40644761136359. The next prime is 40644761136377. The reversal of 40644761136363 is 36363116744604.

40644761136363 is a `hidden beast` number, since 4 + 0 + 6 + 4 + 476 + 1 + 136 + 36 + 3 = 666.

It is not a de Polignac number, because 40644761136363 - 2² = 40644761136359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40644761136313) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 625300381 + ... + 625365377.

It is an arithmetic number, because the mean of its divisors is an integer number (811595837052).

Almost surely, 2^{40644761136363} is an apocalyptic number.

40644761136363 is a deficient number, since it is larger than the sum of its proper divisors (24282905827797).

40644761136363 is a wasteful number, since it uses less digits than its factorization.

40644761136363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69538 (or 69529 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 54.

The spelling of 40644761136363 in words is "forty trillion, six hundred forty-four billion, seven hundred sixty-one million, one hundred thirty-six thousand, three hundred sixty-three".