11870121726 has 16 divisors (see below), whose sum is σ = 26378048400. Its totient is φ = 3956707224.

The previous prime is 11870121721. The next prime is 11870121751. The reversal of 11870121726 is 62712107811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11870121721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109908481 + ... + 109908588.

It is an arithmetic number, because the mean of its divisors is an integer number (1648628025).

Almost surely, 2^11870121726 is an apocalyptic number.

11870121726 is an abundant number, since it is smaller than the sum of its proper divisors (14507926674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11870121726 is a wasteful number, since it uses less digits than its factorization.

11870121726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219817080 (or 219817074 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 36.

The spelling of 11870121726 in words is "eleven billion, eight hundred seventy million, one hundred twenty-one thousand, seven hundred twenty-six".