10991741648915 has 8 divisors (see below), whose sum is σ = 13190114251248. Its totient is φ = 8793377137440.

The previous prime is 10991741648911. The next prime is 10991741648947. The reversal of 10991741648915 is 51984614719901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10991741648915 - 2² = 10991741648911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10991741648911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1534925 + ... + 4933505.

It is an arithmetic number, because the mean of its divisors is an integer number (1648764281406).

Almost surely, 2^{10991741648915} is an apocalyptic number.

10991741648915 is a deficient number, since it is larger than the sum of its proper divisors (2198372602333).

10991741648915 is an equidigital number, since it uses as much as digits as its factorization.

10991741648915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4045429.

The product of its (nonzero) digits is 19595520, while the sum is 65.

The spelling of 10991741648915 in words is "ten trillion, nine hundred ninety-one billion, seven hundred forty-one million, six hundred forty-eight thousand, nine hundred fifteen".