126535133263 has 24 divisors (see below), whose sum is σ = 158989178880. Its totient is φ = 98576504400.

The previous prime is 126535133233. The next prime is 126535133269. The reversal of 126535133263 is 362331535621.

It is a de Polignac number, because none of the positive numbers 2^k-126535133263 is a prime.

It is a super-2 number, since 2×126535133263² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126535133269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4416378 + ... + 4444936.

It is an arithmetic number, because the mean of its divisors is an integer number (6624549120).

Almost surely, 2^126535133263 is an apocalyptic number.

126535133263 is a deficient number, since it is larger than the sum of its proper divisors (32454045617).

126535133263 is a wasteful number, since it uses less digits than its factorization.

126535133263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33819 (or 33808 counting only the distinct ones).

The product of its digits is 291600, while the sum is 40.

Adding to 126535133263 its reverse (362331535621), we get a palindrome (488866668884).

The spelling of 126535133263 in words is "one hundred twenty-six billion, five hundred thirty-five million, one hundred thirty-three thousand, two hundred sixty-three".