78106053643 has 2 divisors, whose sum is σ = 78106053644. Its totient is φ = 78106053642.

The previous prime is 78106053517. The next prime is 78106053647. The reversal of 78106053643 is 34635060187.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78106053643 is a prime.

It is a super-2 number, since 2×78106053643² (a number of 23 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 78106053643.

It is not a weakly prime, because it can be changed into another prime (78106053647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39053026821 + 39053026822.

It is an arithmetic number, because the mean of its divisors is an integer number (39053026822).

Almost surely, 2^78106053643 is an apocalyptic number.

78106053643 is a deficient number, since it is larger than the sum of its proper divisors (1).

78106053643 is an equidigital number, since it uses as much as digits as its factorization.

78106053643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 78106053643 in words is "seventy-eight billion, one hundred six million, fifty-three thousand, six hundred forty-three".