11551292488 has 8 divisors (see below), whose sum is σ = 21658673430. Its totient is φ = 5775646240.

The previous prime is 11551292483. The next prime is 11551292491. The reversal of 11551292488 is 88429215511.

It can be written as a sum of positive squares in only one way, i.e., 10282365604 + 1268926884 = 101402^2 + 35622^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (11551292483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721955773 + ... + 721955788.

Almost surely, 2^11551292488 is an apocalyptic number.

It is an amenable number.

11551292488 is a deficient number, since it is larger than the sum of its proper divisors (10107380942).

11551292488 is a wasteful number, since it uses less digits than its factorization.

11551292488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443911567 (or 1443911563 counting only the distinct ones).

The product of its digits is 230400, while the sum is 46.

The spelling of 11551292488 in words is "eleven billion, five hundred fifty-one million, two hundred ninety-two thousand, four hundred eighty-eight".