124478518811 has 2 divisors, whose sum is σ = 124478518812. Its totient is φ = 124478518810.

The previous prime is 124478518807. The next prime is 124478518817. The reversal of 124478518811 is 118815874421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124478518811 - 2² = 124478518807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124478518811.

It is not a weakly prime, because it can be changed into another prime (124478518817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62239259405 + 62239259406.

It is an arithmetic number, because the mean of its divisors is an integer number (62239259406).

Almost surely, 2^124478518811 is an apocalyptic number.

124478518811 is a deficient number, since it is larger than the sum of its proper divisors (1).

124478518811 is an equidigital number, since it uses as much as digits as its factorization.

124478518811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 573440, while the sum is 50.

The spelling of 124478518811 in words is "one hundred twenty-four billion, four hundred seventy-eight million, five hundred eighteen thousand, eight hundred eleven".