87121836535 has 8 divisors (see below), whose sum is σ = 104547991680. Its totient is φ = 69696277344.

The previous prime is 87121836533. The next prime is 87121836539. The reversal of 87121836535 is 53563812178.

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

It is a cyclic number.

It is not a de Polignac number, because 87121836535 - 2¹ = 87121836533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87121836533) 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, 290481 + ... + 508549.

It is an arithmetic number, because the mean of its divisors is an integer number (13068498960).

Almost surely, 2^87121836535 is an apocalyptic number.

87121836535 is a deficient number, since it is larger than the sum of its proper divisors (17426155145).

87121836535 is a wasteful number, since it uses less digits than its factorization.

87121836535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297977.

The product of its digits is 1209600, while the sum is 49.

The spelling of 87121836535 in words is "eighty-seven billion, one hundred twenty-one million, eight hundred thirty-six thousand, five hundred thirty-five".