11719361536 has 99 divisors (see below), whose sum is σ = 25012102629. Its totient is φ = 5487280128.

The previous prime is 11719361509. The next prime is 11719361539. The reversal of 11719361536 is 63516391711.

The square root of 11719361536 is 108256.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 9124070400 + 2595291136 = 95520^2 + 50944^2 .

It is a super-2 number, since 2×11719361536² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11719361492 and 11719361501.

It is not an unprimeable number, because it can be changed into a prime (11719361539) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 58891165 + ... + 58891363.

Almost surely, 2^11719361536 is an apocalyptic number.

11719361536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

11719361536 is the 108256-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11719361536

11719361536 is an abundant number, since it is smaller than the sum of its proper divisors (13292741093).

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

11719361536 is an frugal number, since it uses more digits than its factorization.

11719361536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 218 counting only the distinct ones).

The product of its digits is 102060, while the sum is 43.

The spelling of 11719361536 in words is "eleven billion, seven hundred nineteen million, three hundred sixty-one thousand, five hundred thirty-six".