87800297724 has 18 divisors (see below), whose sum is σ = 221939641560. Its totient is φ = 29266765896.

The previous prime is 87800297713. The next prime is 87800297759. The reversal of 87800297724 is 42779200878.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1219448544 + ... + 1219448615.

Almost surely, 2^87800297724 is an apocalyptic number.

It is an amenable number.

87800297724 is an abundant number, since it is smaller than the sum of its proper divisors (134139343836).

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

87800297724 is a wasteful number, since it uses less digits than its factorization.

87800297724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438897169 (or 2438897164 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 87800297724 in words is "eighty-seven billion, eight hundred million, two hundred ninety-seven thousand, seven hundred twenty-four".