126455383554621 has 12 divisors (see below), whose sum is σ = 185328551105376. Its totient is φ = 76639626396520.

The previous prime is 126455383554607. The next prime is 126455383554667.

126455383554621 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 126455383554621 - 2²¹ = 126455381457469 is a prime.

It is a super-2 number, since 2×126455383554621² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126455383554421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174180968721 + ... + 174180969446.

It is an arithmetic number, because the mean of its divisors is an integer number (15444045925448).

Almost surely, 2^{126455383554621} is an apocalyptic number.

126455383554621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126455383554621 is a deficient number, since it is larger than the sum of its proper divisors (58873167550755).

126455383554621 is a wasteful number, since it uses less digits than its factorization.

126455383554621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348361938192 (or 348361938181 counting only the distinct ones).

The product of its digits is 103680000, while the sum is 60.

The spelling of 126455383554621 in words is "one hundred twenty-six trillion, four hundred fifty-five billion, three hundred eighty-three million, five hundred fifty-four thousand, six hundred twenty-one".