1177845049921 has 16 divisors (see below), whose sum is σ = 1246941336960. Its totient is φ = 1110653631360.

The previous prime is 1177845049907. The next prime is 1177845049987. The reversal of 1177845049921 is 1299405487711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1177845049921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1177845047921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11710381 + ... + 11810533.

It is an arithmetic number, because the mean of its divisors is an integer number (77933833560).

Almost surely, 2^{1177845049921} is an apocalyptic number.

It is an amenable number.

1177845049921 is a deficient number, since it is larger than the sum of its proper divisors (69096287039).

1177845049921 is a wasteful number, since it uses less digits than its factorization.

1177845049921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109656.

The product of its (nonzero) digits is 5080320, while the sum is 58.

The spelling of 1177845049921 in words is "one trillion, one hundred seventy-seven billion, eight hundred forty-five million, forty-nine thousand, nine hundred twenty-one".