1091945254156 has 24 divisors (see below), whose sum is σ = 1956879461376. Its totient is φ = 532900143120.

The previous prime is 1091945254117. The next prime is 1091945254177. The reversal of 1091945254156 is 6514525491901.

It is a super-2 number, since 2×1091945254156² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7844110 + ... + 7982101.

It is an arithmetic number, because the mean of its divisors is an integer number (81536644224).

Almost surely, 2^{1091945254156} is an apocalyptic number.

It is an amenable number.

1091945254156 is a deficient number, since it is larger than the sum of its proper divisors (864934207220).

1091945254156 is a wasteful number, since it uses less digits than its factorization.

1091945254156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15826629 (or 15826627 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 52.

The spelling of 1091945254156 in words is "one trillion, ninety-one billion, nine hundred forty-five million, two hundred fifty-four thousand, one hundred fifty-six".