1091783668345 has 8 divisors (see below), whose sum is σ = 1318178074176. Its totient is φ = 868068486576.

The previous prime is 1091783668337. The next prime is 1091783668429. The reversal of 1091783668345 is 5438663871901.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1091783668345 - 2³ = 1091783668337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669805117 + ... + 669806746.

It is an arithmetic number, because the mean of its divisors is an integer number (164772259272).

Almost surely, 2^{1091783668345} is an apocalyptic number.

It is an amenable number.

1091783668345 is a deficient number, since it is larger than the sum of its proper divisors (226394405831).

1091783668345 is a wasteful number, since it uses less digits than its factorization.

1091783668345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339612031.

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 1091783668345 in words is "one trillion, ninety-one billion, seven hundred eighty-three million, six hundred sixty-eight thousand, three hundred forty-five".