7842430081887 has 8 divisors (see below), whose sum is σ = 10470100707504. Its totient is φ = 5221523088768.

The previous prime is 7842430081883. The next prime is 7842430081901. The reversal of 7842430081887 is 7881800342487.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7842430081887 - 2² = 7842430081883 is a prime.

It is a super-3 number, since 3×7842430081887³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 7842430081887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7842430081883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1690905418 + ... + 1690910055.

It is an arithmetic number, because the mean of its divisors is an integer number (1308762588438).

Almost surely, 2^{7842430081887} is an apocalyptic number.

7842430081887 is a deficient number, since it is larger than the sum of its proper divisors (2627670625617).

7842430081887 is a wasteful number, since it uses less digits than its factorization.

7842430081887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381816249.

The product of its (nonzero) digits is 19267584, while the sum is 60.

The spelling of 7842430081887 in words is "seven trillion, eight hundred forty-two billion, four hundred thirty million, eighty-one thousand, eight hundred eighty-seven".