10491967357 has 4 divisors (see below), whose sum is σ = 10492383580. Its totient is φ = 10491551136.

The previous prime is 10491967331. The next prime is 10491967411. The reversal of 10491967357 is 75376919401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75376919401 = 7 ⋅10768131343.

It can be written as a sum of positive squares in 2 ways, for example, as 3333792121 + 7158175236 = 57739^2 + 84606^2 .

It is a cyclic number.

It is not a de Polignac number, because 10491967357 - 2⁷ = 10491967229 is a prime.

It is a super-2 number, since 2×10491967357² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10491967457) 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, 167682 + ... + 221587.

It is an arithmetic number, because the mean of its divisors is an integer number (2623095895).

Almost surely, 2^10491967357 is an apocalyptic number.

It is an amenable number.

10491967357 is a deficient number, since it is larger than the sum of its proper divisors (416223).

10491967357 is an equidigital number, since it uses as much as digits as its factorization.

10491967357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416222.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The spelling of 10491967357 in words is "ten billion, four hundred ninety-one million, nine hundred sixty-seven thousand, three hundred fifty-seven".