87917572347 has 24 divisors (see below), whose sum is σ = 128910547920. Its totient is φ = 53257881600.

The previous prime is 87917572333. The next prime is 87917572403. The reversal of 87917572347 is 74327571978.

It is not a de Polignac number, because 87917572347 - 2⁸ = 87917572091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87917572247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 715947 + ... + 829707.

It is an arithmetic number, because the mean of its divisors is an integer number (5371272830).

Almost surely, 2^87917572347 is an apocalyptic number.

87917572347 is a deficient number, since it is larger than the sum of its proper divisors (40992975573).

87917572347 is a wasteful number, since it uses less digits than its factorization.

87917572347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115915 (or 115904 counting only the distinct ones).

The product of its digits is 20744640, while the sum is 60.

The spelling of 87917572347 in words is "eighty-seven billion, nine hundred seventeen million, five hundred seventy-two thousand, three hundred forty-seven".