126018451477 has 2 divisors, whose sum is σ = 126018451478. Its totient is φ = 126018451476.

The previous prime is 126018451327. The next prime is 126018451483. The reversal of 126018451477 is 774154810621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78961562001 + 47056889476 = 281001^2 + 216926^2 .

It is a cyclic number.

It is not a de Polignac number, because 126018451477 - 2²⁷ = 125884233749 is a prime.

It is a super-2 number, since 2×126018451477² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126018451177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63009225738 + 63009225739.

It is an arithmetic number, because the mean of its divisors is an integer number (63009225739).

Almost surely, 2^126018451477 is an apocalyptic number.

It is an amenable number.

126018451477 is a deficient number, since it is larger than the sum of its proper divisors (1).

126018451477 is an equidigital number, since it uses as much as digits as its factorization.

126018451477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 126018451477 in words is "one hundred twenty-six billion, eighteen million, four hundred fifty-one thousand, four hundred seventy-seven".