126453354621 has 32 divisors (see below), whose sum is σ = 189445200000. Its totient is φ = 74353178880.

The previous prime is 126453354611. The next prime is 126453354637.

126453354621 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 126453354621 - 2⁵ = 126453354589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126453354611) 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 in 31 ways as a sum of consecutive naturals, for example, 277755 + ... + 574503.

It is an arithmetic number, because the mean of its divisors is an integer number (5920162500).

Almost surely, 2^126453354621 is an apocalyptic number.

126453354621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126453354621 is a deficient number, since it is larger than the sum of its proper divisors (62991845379).

126453354621 is a wasteful number, since it uses less digits than its factorization.

126453354621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297149.

The product of its digits is 518400, while the sum is 42.

The spelling of 126453354621 in words is "one hundred twenty-six billion, four hundred fifty-three million, three hundred fifty-four thousand, six hundred twenty-one".