40661520210344 has 32 divisors (see below), whose sum is σ = 83259117583200. Its totient is φ = 18462992243520.

The previous prime is 40661520210343. The next prime is 40661520210427. The reversal of 40661520210344 is 44301202516604.

It is a junction number, because it is equal to n+sod(n) for n = 40661520210298 and 40661520210307.

It is not an unprimeable number, because it can be changed into a prime (40661520210341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243877979 + ... + 244044650.

It is an arithmetic number, because the mean of its divisors is an integer number (2601847424475).

Almost surely, 2^{40661520210344} is an apocalyptic number.

40661520210344 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40661520210344 is an abundant number, since it is smaller than the sum of its proper divisors (42597597372856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40661520210344 is a wasteful number, since it uses less digits than its factorization.

40661520210344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487923593 (or 487923589 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 40661520210344 its reverse (44301202516604), we get a palindrome (84962722726948).

The spelling of 40661520210344 in words is "forty trillion, six hundred sixty-one billion, five hundred twenty million, two hundred ten thousand, three hundred forty-four".