1091902543705 has 16 divisors (see below), whose sum is σ = 1342464274944. Its totient is φ = 852187410880.

The previous prime is 1091902543691. The next prime is 1091902543751. The reversal of 1091902543705 is 5073452091901.

It is not a de Polignac number, because 1091902543705 - 2¹³ = 1091902535513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7397002 + ... + 7543171.

It is an arithmetic number, because the mean of its divisors is an integer number (83904017184).

Almost surely, 2^{1091902543705} is an apocalyptic number.

It is an amenable number.

1091902543705 is a deficient number, since it is larger than the sum of its proper divisors (250561731239).

1091902543705 is a wasteful number, since it uses less digits than its factorization.

1091902543705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14940536.

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 1091902543705 in words is "one trillion, ninety-one billion, nine hundred two million, five hundred forty-three thousand, seven hundred five".