2167481944587 has 4 divisors (see below), whose sum is σ = 2889975926120. Its totient is φ = 1444987963056.

The previous prime is 2167481944571. The next prime is 2167481944631. The reversal of 2167481944587 is 7854491847612.

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

It is not a de Polignac number, because 2167481944587 - 2⁴ = 2167481944571 is a prime.

It is a super-2 number, since 2×2167481944587² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2167481934587) 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, 361246990762 + ... + 361246990767.

It is an arithmetic number, because the mean of its divisors is an integer number (722493981530).

Almost surely, 2^{2167481944587} is an apocalyptic number.

2167481944587 is a deficient number, since it is larger than the sum of its proper divisors (722493981533).

2167481944587 is an equidigital number, since it uses as much as digits as its factorization.

2167481944587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722493981532.

The product of its digits is 108380160, while the sum is 66.

The spelling of 2167481944587 in words is "two trillion, one hundred sixty-seven billion, four hundred eighty-one million, nine hundred forty-four thousand, five hundred eighty-seven".