87745289748481 has 4 divisors (see below), whose sum is σ = 87745699293232. Its totient is φ = 87744880203732.

The previous prime is 87745289748451. The next prime is 87745289748509. The reversal of 87745289748481 is 18484798254778.

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 87745289748481 - 2⁷ = 87745289748353 is a prime.

It is a super-2 number, since 2×87745289748481² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87745289748395 and 87745289748404.

It is not an unprimeable number, because it can be changed into a prime (87745289748451) 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, 204450831 + ... + 204879556.

It is an arithmetic number, because the mean of its divisors is an integer number (21936424823308).

Almost surely, 2^{87745289748481} is an apocalyptic number.

It is an amenable number.

87745289748481 is a deficient number, since it is larger than the sum of its proper divisors (409544751).

87745289748481 is a wasteful number, since it uses less digits than its factorization.

87745289748481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409544750.

The product of its digits is 8092385280, while the sum is 82.

The spelling of 87745289748481 in words is "eighty-seven trillion, seven hundred forty-five billion, two hundred eighty-nine million, seven hundred forty-eight thousand, four hundred eighty-one".