126628262513 has 6 divisors (see below), whose sum is σ = 132373212594. Its totient is φ = 121122685376.

The previous prime is 126628262471. The next prime is 126628262561. The reversal of 126628262513 is 315262826621.

It can be written as a sum of positive squares in only one way, i.e., 124011735409 + 2616527104 = 352153^2 + 51152^2 .

It is a de Polignac number, because none of the positive numbers 2^k-126628262513 is a prime.

It is a super-2 number, since 2×126628262513² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126628262573) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119685920 + ... + 119686977.

It is an arithmetic number, because the mean of its divisors is an integer number (22062202099).

Almost surely, 2^126628262513 is an apocalyptic number.

It is an amenable number.

126628262513 is a deficient number, since it is larger than the sum of its proper divisors (5744950081).

126628262513 is an equidigital number, since it uses as much as digits as its factorization.

126628262513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239372943 (or 239372920 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The spelling of 126628262513 in words is "one hundred twenty-six billion, six hundred twenty-eight million, two hundred sixty-two thousand, five hundred thirteen".