43131605061655 has 16 divisors (see below), whose sum is σ = 56463447659904. Its totient is φ = 31368298056480.

The previous prime is 43131605061631. The next prime is 43131605061659. The reversal of 43131605061655 is 55616050613134.

It is not a de Polignac number, because 43131605061655 - 2²³ = 43131596673047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43131605061659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11362384 + ... + 14675386.

It is an arithmetic number, because the mean of its divisors is an integer number (3528965478744).

Almost surely, 2^{43131605061655} is an apocalyptic number.

43131605061655 is a deficient number, since it is larger than the sum of its proper divisors (13331842598249).

43131605061655 is a wasteful number, since it uses less digits than its factorization.

43131605061655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549726.

The product of its (nonzero) digits is 972000, while the sum is 46.

Adding to 43131605061655 its reverse (55616050613134), we get a palindrome (98747655674789).

The spelling of 43131605061655 in words is "forty-three trillion, one hundred thirty-one billion, six hundred five million, sixty-one thousand, six hundred fifty-five".