1121571605164 has 24 divisors (see below), whose sum is σ = 2013047870400. Its totient is φ = 546448072320.

The previous prime is 1121571605153. The next prime is 1121571605179. The reversal of 1121571605164 is 4615061751211.

It is a super-2 number, since 2×1121571605164² (a number of 25 digits) contains 22 as substring.

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, 3988804 + ... + 4260715.

It is an arithmetic number, because the mean of its divisors is an integer number (83876994600).

Almost surely, 2^{1121571605164} is an apocalyptic number.

It is an amenable number.

1121571605164 is a deficient number, since it is larger than the sum of its proper divisors (891476265236).

1121571605164 is a wasteful number, since it uses less digits than its factorization.

1121571605164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8250393 (or 8250391 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 40.

The spelling of 1121571605164 in words is "one trillion, one hundred twenty-one billion, five hundred seventy-one million, six hundred five thousand, one hundred sixty-four".