126446644621 has 16 divisors (see below), whose sum is σ = 145221940800. Its totient is φ = 108886377600.

The previous prime is 126446644619. The next prime is 126446644673.

126446644621 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 126446644621 - 2¹ = 126446644619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126446644021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1636111 + ... + 1711651.

It is an arithmetic number, because the mean of its divisors is an integer number (9076371300).

Almost surely, 2^126446644621 is an apocalyptic number.

126446644621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126446644621 is a deficient number, since it is larger than the sum of its proper divisors (18775296179).

126446644621 is a wasteful number, since it uses less digits than its factorization.

126446644621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83580.

The product of its digits is 1327104, while the sum is 46.

The spelling of 126446644621 in words is "one hundred twenty-six billion, four hundred forty-six million, six hundred forty-four thousand, six hundred twenty-one".