11557200721126 has 32 divisors (see below), whose sum is σ = 17563303612800. Its totient is φ = 5703189436800.

The previous prime is 11557200721123. The next prime is 11557200721127. The reversal of 11557200721126 is 62112700275511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11557200721123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357758691 + ... + 357790993.

It is an arithmetic number, because the mean of its divisors is an integer number (548853237900).

Almost surely, 2^{11557200721126} is an apocalyptic number.

11557200721126 is a deficient number, since it is larger than the sum of its proper divisors (6006102891674).

11557200721126 is a wasteful number, since it uses less digits than its factorization.

11557200721126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38784.

The product of its (nonzero) digits is 58800, while the sum is 40.

Adding to 11557200721126 its reverse (62112700275511), we get a palindrome (73669900996637).

The spelling of 11557200721126 in words is "eleven trillion, five hundred fifty-seven billion, two hundred million, seven hundred twenty-one thousand, one hundred twenty-six".