991411181434 has 16 divisors (see below), whose sum is σ = 1503138637440. Its totient is φ = 490379384880.

The previous prime is 991411181393. The next prime is 991411181461. The reversal of 991411181434 is 434181114199.

It is a super-2 number, since 2×991411181434² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3466054 + ... + 3741169.

It is an arithmetic number, because the mean of its divisors is an integer number (93946164840).

Almost surely, 2^991411181434 is an apocalyptic number.

991411181434 is a deficient number, since it is larger than the sum of its proper divisors (511727456006).

991411181434 is a wasteful number, since it uses less digits than its factorization.

991411181434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7207965.

The product of its digits is 124416, while the sum is 46.

The spelling of 991411181434 in words is "nine hundred ninety-one billion, four hundred eleven million, one hundred eighty-one thousand, four hundred thirty-four".