116853901921 has 3 divisors (see below), whose sum is σ = 116854243761. Its totient is φ = 116853560082.

The previous prime is 116853901889. The next prime is 116853901937. The reversal of 116853901921 is 129109358611.

The square root of 116853901921 is 341839.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 129109358611 = 9929 ⋅13003259.

It is not a de Polignac number, because 116853901921 - 2⁵ = 116853901889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116853901961) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 170920 + ... + 512758.

It is an arithmetic number, because the mean of its divisors is an integer number (38951414587).

Almost surely, 2^116853901921 is an apocalyptic number.

116853901921 is the 341839-th square number.

116853901921 is the 170920-th centered octagonal number.

It is an amenable number.

116853901921 is a deficient number, since it is larger than the sum of its proper divisors (341840).

116853901921 is an frugal number, since it uses more digits than its factorization.

116853901921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683678 (or 341839 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 46.

The spelling of 116853901921 in words is "one hundred sixteen billion, eight hundred fifty-three million, nine hundred one thousand, nine hundred twenty-one".