11261402888 has 36 divisors (see below), whose sum is σ = 22440427485. Its totient is φ = 5297082496.

The previous prime is 11261402881. The next prime is 11261402903. The reversal of 11261402888 is 88820416211.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 10306716484 + 954686404 = 101522^2 + 30898^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=75038.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11261402881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5101481 + ... + 5103687.

Almost surely, 2^11261402888 is an apocalyptic number.

It is an amenable number.

11261402888 is a deficient number, since it is larger than the sum of its proper divisors (11179024597).

11261402888 is an frugal number, since it uses more digits than its factorization.

11261402888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4454 (or 2226 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 41.

The spelling of 11261402888 in words is "eleven billion, two hundred sixty-one million, four hundred two thousand, eight hundred eighty-eight".