43501045651013 has 2 divisors, whose sum is σ = 43501045651014. Its totient is φ = 43501045651012.

The previous prime is 43501045650973. The next prime is 43501045651069. The reversal of 43501045651013 is 31015654010534.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43197927135169 + 303118515844 = 6572513^2 + 550562^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43501045651013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43501045651093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21750522825506 + 21750522825507.

It is an arithmetic number, because the mean of its divisors is an integer number (21750522825507).

Almost surely, 2^{43501045651013} is an apocalyptic number.

It is an amenable number.

43501045651013 is a deficient number, since it is larger than the sum of its proper divisors (1).

43501045651013 is an equidigital number, since it uses as much as digits as its factorization.

43501045651013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 38.

Adding to 43501045651013 its reverse (31015654010534), we get a palindrome (74516699661547).

The spelling of 43501045651013 in words is "forty-three trillion, five hundred one billion, forty-five million, six hundred fifty-one thousand, thirteen".