10649991774 has 8 divisors (see below), whose sum is σ = 21299983560. Its totient is φ = 3549997256.

The previous prime is 10649991749. The next prime is 10649991791. The reversal of 10649991774 is 47719994601.

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

10649991774 is an admirable number.

It is a super-2 number, since 2×10649991774² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 887499309 + ... + 887499320.

It is an arithmetic number, because the mean of its divisors is an integer number (2662497945).

Almost surely, 2^10649991774 is an apocalyptic number.

10649991774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

10649991774 is a wasteful number, since it uses less digits than its factorization.

10649991774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774998634.

The product of its (nonzero) digits is 3429216, while the sum is 57.

The spelling of 10649991774 in words is "ten billion, six hundred forty-nine million, nine hundred ninety-one thousand, seven hundred seventy-four".