18026422412477 has 2 divisors, whose sum is σ = 18026422412478. Its totient is φ = 18026422412476.

The previous prime is 18026422412419. The next prime is 18026422412567. The reversal of 18026422412477 is 77421422462081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10008497831641 + 8017924580836 = 3163621^2 + 2831594^2 .

It is a cyclic number.

It is not a de Polignac number, because 18026422412477 - 2⁸ = 18026422412221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18026422012477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9013211206238 + 9013211206239.

It is an arithmetic number, because the mean of its divisors is an integer number (9013211206239).

Almost surely, 2^{18026422412477} is an apocalyptic number.

It is an amenable number.

18026422412477 is a deficient number, since it is larger than the sum of its proper divisors (1).

18026422412477 is an equidigital number, since it uses as much as digits as its factorization.

18026422412477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2408448, while the sum is 50.

The spelling of 18026422412477 in words is "eighteen trillion, twenty-six billion, four hundred twenty-two million, four hundred twelve thousand, four hundred seventy-seven".