124778684879 has 2 divisors, whose sum is σ = 124778684880. Its totient is φ = 124778684878.

The previous prime is 124778684813. The next prime is 124778684887. The reversal of 124778684879 is 978486877421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124778684879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124778684809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62389342439 + 62389342440.

It is an arithmetic number, because the mean of its divisors is an integer number (62389342440).

Almost surely, 2^124778684879 is an apocalyptic number.

124778684879 is a deficient number, since it is larger than the sum of its proper divisors (1).

124778684879 is an equidigital number, since it uses as much as digits as its factorization.

124778684879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 303464448, while the sum is 71.

The spelling of 124778684879 in words is "one hundred twenty-four billion, seven hundred seventy-eight million, six hundred eighty-four thousand, eight hundred seventy-nine".