126488884621 has 4 divisors (see below), whose sum is σ = 137987874144. Its totient is φ = 114989895100.

The previous prime is 126488884609. The next prime is 126488884679.

126488884621 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126488884621 - 2¹¹ = 126488882573 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126488882621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5749494745 + ... + 5749494766.

It is an arithmetic number, because the mean of its divisors is an integer number (34496968536).

Almost surely, 2^126488884621 is an apocalyptic number.

126488884621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126488884621 is a deficient number, since it is larger than the sum of its proper divisors (11498989523).

126488884621 is a wasteful number, since it uses less digits than its factorization.

126488884621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11498989522.

The product of its digits is 9437184, while the sum is 58.

The spelling of 126488884621 in words is "one hundred twenty-six billion, four hundred eighty-eight million, eight hundred eighty-four thousand, six hundred twenty-one".