107787721243 has 2 divisors, whose sum is σ = 107787721244. Its totient is φ = 107787721242.

The previous prime is 107787721193. The next prime is 107787721289. The reversal of 107787721243 is 342127787701.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-107787721243 is a prime.

It is not a weakly prime, because it can be changed into another prime (107787761243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53893860621 + 53893860622.

It is an arithmetic number, because the mean of its divisors is an integer number (53893860622).

Almost surely, 2^107787721243 is an apocalyptic number.

107787721243 is a deficient number, since it is larger than the sum of its proper divisors (1).

107787721243 is an equidigital number, since it uses as much as digits as its factorization.

107787721243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 921984, while the sum is 49.

The spelling of 107787721243 in words is "one hundred seven billion, seven hundred eighty-seven million, seven hundred twenty-one thousand, two hundred forty-three".