126341645405 has 24 divisors (see below), whose sum is σ = 159091470168. Its totient is φ = 96248919168.

The previous prime is 126341645389. The next prime is 126341645429. The reversal of 126341645405 is 504546143621.

It can be written as a sum of positive squares in 4 ways, for example, as 13001016484 + 113340628921 = 114022^2 + 336661^2 .

It is not a de Polignac number, because 126341645405 - 2⁴ = 126341645389 is a prime.

It is a super-2 number, since 2×126341645405² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254087 + ... + 563243.

It is an arithmetic number, because the mean of its divisors is an integer number (6628811257).

Almost surely, 2^126341645405 is an apocalyptic number.

It is an amenable number.

126341645405 is a deficient number, since it is larger than the sum of its proper divisors (32749824763).

126341645405 is an equidigital number, since it uses as much as digits as its factorization.

126341645405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309293 (or 309246 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 126341645405 in words is "one hundred twenty-six billion, three hundred forty-one million, six hundred forty-five thousand, four hundred five".