126273372621 has 16 divisors (see below), whose sum is σ = 183939310080. Its totient is φ = 76417254320.

The previous prime is 126273372619. The next prime is 126273372647.

126273372621 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 126273372621 - 2¹ = 126273372619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126273372611) 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, 2778681 + ... + 2823758.

It is an arithmetic number, because the mean of its divisors is an integer number (11496206880).

Almost surely, 2^126273372621 is an apocalyptic number.

126273372621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126273372621 is a deficient number, since it is larger than the sum of its proper divisors (57665937459).

126273372621 is a wasteful number, since it uses less digits than its factorization.

126273372621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5603136.

The product of its digits is 254016, while the sum is 42.

It can be divided in two parts, 126273 and 372621, that added together give a palindrome (498894).

The spelling of 126273372621 in words is "one hundred twenty-six billion, two hundred seventy-three million, three hundred seventy-two thousand, six hundred twenty-one".