11953704889 has 9 divisors (see below), whose sum is σ = 13906220517. Its totient is φ = 10245376764.

The previous prime is 11953704883. The next prime is 11953704929. The reversal of 11953704889 is 98840735911.

It is a happy number.

The square root of 11953704889 is 109333.

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

It is not a de Polignac number, because 11953704889 - 2³ = 11953704881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11953704881) 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, 757522 + ... + 773140.

It is an arithmetic number, because the mean of its divisors is an integer number (1545135613).

Almost surely, 2^11953704889 is an apocalyptic number.

11953704889 is the 109333-rd square number.

11953704889 is the 54667-th centered octagonal number.

It is an amenable number.

11953704889 is a deficient number, since it is larger than the sum of its proper divisors (1952515628).

11953704889 is an frugal number, since it uses more digits than its factorization.

11953704889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31252 (or 15626 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 11953704889 in words is "eleven billion, nine hundred fifty-three million, seven hundred four thousand, eight hundred eighty-nine".