11355859551 has 64 divisors (see below), whose sum is σ = 16395337728. Its totient is φ = 6979125888.

The previous prime is 11355859531. The next prime is 11355859577. The reversal of 11355859551 is 15595855311.

It is not a de Polignac number, because 11355859551 - 2⁷ = 11355859423 is a prime.

It is a super-2 number, since 2×11355859551² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11355859551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11355859511) 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 63 ways as a sum of consecutive naturals, for example, 50025700 + ... + 50025926.

It is an arithmetic number, because the mean of its divisors is an integer number (256177152).

Almost surely, 2^11355859551 is an apocalyptic number.

11355859551 is a deficient number, since it is larger than the sum of its proper divisors (5039478177).

11355859551 is a wasteful number, since it uses less digits than its factorization.

11355859551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580.

The product of its digits is 675000, while the sum is 48.

The spelling of 11355859551 in words is "eleven billion, three hundred fifty-five million, eight hundred fifty-nine thousand, five hundred fifty-one".