1156481635123 has 4 divisors (see below), whose sum is σ = 1161667651648. Its totient is φ = 1151295618600.

The previous prime is 1156481635079. The next prime is 1156481635159. The reversal of 1156481635123 is 3215361846511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1156481635123 - 2²⁵ = 1156448080691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156481615123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2593007928 + ... + 2593008373.

It is an arithmetic number, because the mean of its divisors is an integer number (290416912912).

Almost surely, 2^{1156481635123} is an apocalyptic number.

1156481635123 is a deficient number, since it is larger than the sum of its proper divisors (5186016525).

1156481635123 is an equidigital number, since it uses as much as digits as its factorization.

1156481635123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5186016524.

The product of its digits is 518400, while the sum is 46.

The spelling of 1156481635123 in words is "one trillion, one hundred fifty-six billion, four hundred eighty-one million, six hundred thirty-five thousand, one hundred twenty-three".