18124428239077 has 2 divisors, whose sum is σ = 18124428239078. Its totient is φ = 18124428239076.

The previous prime is 18124428238997. The next prime is 18124428239179. The reversal of 18124428239077 is 77093282442181.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16353822768196 + 1770605470881 = 4043986^2 + 1330641^2 .

It is a cyclic number.

It is not a de Polignac number, because 18124428239077 - 2⁴³ = 9328335216869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18124458239077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9062214119538 + 9062214119539.

It is an arithmetic number, because the mean of its divisors is an integer number (9062214119539).

Almost surely, 2^{18124428239077} is an apocalyptic number.

It is an amenable number.

18124428239077 is a deficient number, since it is larger than the sum of its proper divisors (1).

18124428239077 is an equidigital number, since it uses as much as digits as its factorization.

18124428239077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10838016, while the sum is 58.

The spelling of 18124428239077 in words is "eighteen trillion, one hundred twenty-four billion, four hundred twenty-eight million, two hundred thirty-nine thousand, seventy-seven".