126401633138 has 8 divisors (see below), whose sum is σ = 206839036080. Its totient is φ = 57455287780.

The previous prime is 126401633047. The next prime is 126401633177. The reversal of 126401633138 is 831336104621.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2872764368 + ... + 2872764411.

It is an arithmetic number, because the mean of its divisors is an integer number (25854879510).

Almost surely, 2^126401633138 is an apocalyptic number.

126401633138 is a deficient number, since it is larger than the sum of its proper divisors (80437402942).

126401633138 is a wasteful number, since it uses less digits than its factorization.

126401633138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5745528792.

The product of its (nonzero) digits is 62208, while the sum is 38.

Adding to 126401633138 its reverse (831336104621), we get a palindrome (957737737759).

The spelling of 126401633138 in words is "one hundred twenty-six billion, four hundred one million, six hundred thirty-three thousand, one hundred thirty-eight".