126772767277621 has 8 divisors (see below), whose sum is σ = 126964837045944. Its totient is φ = 126580819270080.

The previous prime is 126772767277601. The next prime is 126772767277657.

126772767277621 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 98755118628721 + 28017648648900 = 9937561^2 + 5293170^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126772767277621 - 2¹³ = 126772767269429 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 (126772767277601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28356186 + ... + 32521051.

It is an arithmetic number, because the mean of its divisors is an integer number (15870604630743).

Almost surely, 2^{126772767277621} is an apocalyptic number.

It is an amenable number.

126772767277621 is a deficient number, since it is larger than the sum of its proper divisors (192069768323).

126772767277621 is an equidigital number, since it uses as much as digits as its factorization.

126772767277621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60880391.

The product of its digits is 406594944, while the sum is 70.

The spelling of 126772767277621 in words is "one hundred twenty-six trillion, seven hundred seventy-two billion, seven hundred sixty-seven million, two hundred seventy-seven thousand, six hundred twenty-one".