87844273877233 has 4 divisors (see below), whose sum is σ = 87844293372528. Its totient is φ = 87844254381940.

The previous prime is 87844273877197. The next prime is 87844273877357. The reversal of 87844273877233 is 33277837244878.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87844273877233 - 2²¹ = 87844271780081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87844273817233) 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, 856638 + ... + 13282408.

It is an arithmetic number, because the mean of its divisors is an integer number (21961073343132).

Almost surely, 2^{87844273877233} is an apocalyptic number.

It is an amenable number.

87844273877233 is a deficient number, since it is larger than the sum of its proper divisors (19495295).

87844273877233 is a wasteful number, since it uses less digits than its factorization.

87844273877233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19495294.

The product of its digits is 2124251136, while the sum is 73.

The spelling of 87844273877233 in words is "eighty-seven trillion, eight hundred forty-four billion, two hundred seventy-three million, eight hundred seventy-seven thousand, two hundred thirty-three".