43661050561147 has 2 divisors, whose sum is σ = 43661050561148. Its totient is φ = 43661050561146.

The previous prime is 43661050561099. The next prime is 43661050561153. The reversal of 43661050561147 is 74116505016634.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43661050561147 is a prime.

It is a super-2 number, since 2×43661050561147² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43661050561147.

It is not a weakly prime, because it can be changed into another prime (43661050561157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21830525280573 + 21830525280574.

It is an arithmetic number, because the mean of its divisors is an integer number (21830525280574).

Almost surely, 2^{43661050561147} is an apocalyptic number.

43661050561147 is a deficient number, since it is larger than the sum of its proper divisors (1).

43661050561147 is an equidigital number, since it uses as much as digits as its factorization.

43661050561147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 43661050561147 in words is "forty-three trillion, six hundred sixty-one billion, fifty million, five hundred sixty-one thousand, one hundred forty-seven".