10991746458619 has 4 divisors (see below), whose sum is σ = 11094473061144. Its totient is φ = 10889019856096.

The previous prime is 10991746458611. The next prime is 10991746458673. The reversal of 10991746458619 is 91685464719901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10991746458619 - 2³ = 10991746458611 is a prime.

It is a super-2 number, since 2×10991746458619² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10991746458611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51363301102 + ... + 51363301315.

It is an arithmetic number, because the mean of its divisors is an integer number (2773618265286).

Almost surely, 2^{10991746458619} is an apocalyptic number.

10991746458619 is a deficient number, since it is larger than the sum of its proper divisors (102726602525).

10991746458619 is a wasteful number, since it uses less digits than its factorization.

10991746458619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102726602524.

The product of its (nonzero) digits is 117573120, while the sum is 70.

The spelling of 10991746458619 in words is "ten trillion, nine hundred ninety-one billion, seven hundred forty-six million, four hundred fifty-eight thousand, six hundred nineteen".