87840100712447 has 4 divisors (see below), whose sum is σ = 93007165460256. Its totient is φ = 82673035964640.

The previous prime is 87840100712437. The next prime is 87840100712471. The reversal of 87840100712447 is 74421700104878.

It is a happy number.

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 87840100712447 - 2²² = 87840096518143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87840100712437) 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, 2583532373879 + ... + 2583532373912.

It is an arithmetic number, because the mean of its divisors is an integer number (23251791365064).

Almost surely, 2^{87840100712447} is an apocalyptic number.

87840100712447 is a deficient number, since it is larger than the sum of its proper divisors (5167064747809).

87840100712447 is a wasteful number, since it uses less digits than its factorization.

87840100712447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5167064747808.

The product of its (nonzero) digits is 2809856, while the sum is 53.

The spelling of 87840100712447 in words is "eighty-seven trillion, eight hundred forty billion, one hundred million, seven hundred twelve thousand, four hundred forty-seven".