991048124196 has 81 divisors (see below), whose sum is σ = 2712889155249. Its totient is φ = 304913992032.

The previous prime is 991048124167. The next prime is 991048124197. The reversal of 991048124196 is 691421840199.

The square root of 991048124196 is 995514.

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

991048124196 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 146604752100 + 844443372096 = 382890^2 + 918936^2 .

It is not an unprimeable number, because it can be changed into a prime (991048124197) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 77643711 + ... + 77656473.

Almost surely, 2^991048124196 is an apocalyptic number.

991048124196 is the 995514-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 991048124196

991048124196 is an abundant number, since it is smaller than the sum of its proper divisors (1721841031053).

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

991048124196 is a wasteful number, since it uses less digits than its factorization.

991048124196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25562 (or 12781 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 991048124196 in words is "nine hundred ninety-one billion, forty-eight million, one hundred twenty-four thousand, one hundred ninety-six".