87121836534 has 8 divisors (see below), whose sum is σ = 174243673080. Its totient is φ = 29040612176.

The previous prime is 87121836533. The next prime is 87121836539. The reversal of 87121836534 is 43563812178.

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

87121836534 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 7260153039 + ... + 7260153050.

It is an arithmetic number, because the mean of its divisors is an integer number (21780459135).

Almost surely, 2^87121836534 is an apocalyptic number.

87121836534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87121836534 is a wasteful number, since it uses less digits than its factorization.

87121836534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14520306094.

The product of its digits is 967680, while the sum is 48.

The spelling of 87121836534 in words is "eighty-seven billion, one hundred twenty-one million, eight hundred thirty-six thousand, five hundred thirty-four".