78254926843 has 2 divisors, whose sum is σ = 78254926844. Its totient is φ = 78254926842.

The previous prime is 78254926801. The next prime is 78254926853. The reversal of 78254926843 is 34862945287.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78254926843 - 2³³ = 69664992251 is a prime.

It is a super-2 number, since 2×78254926843² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78254926853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39127463421 + 39127463422.

It is an arithmetic number, because the mean of its divisors is an integer number (39127463422).

Almost surely, 2^78254926843 is an apocalyptic number.

78254926843 is a deficient number, since it is larger than the sum of its proper divisors (1).

78254926843 is an equidigital number, since it uses as much as digits as its factorization.

78254926843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23224320, while the sum is 58.

The spelling of 78254926843 in words is "seventy-eight billion, two hundred fifty-four million, nine hundred twenty-six thousand, eight hundred forty-three".