87075532780 has 24 divisors (see below), whose sum is σ = 182879299008. Its totient is φ = 34826274048.

The previous prime is 87075532751. The next prime is 87075532783. The reversal of 87075532780 is 8723557078.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (87075532783) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 61549 + ... + 421828.

It is an arithmetic number, because the mean of its divisors is an integer number (7619970792).

Almost surely, 2^87075532780 is an apocalyptic number.

It is an amenable number.

87075532780 is an abundant number, since it is smaller than the sum of its proper divisors (95803766228).

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

87075532780 is a wasteful number, since it uses less digits than its factorization.

87075532780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492393 (or 492391 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 52.

The spelling of 87075532780 in words is "eighty-seven billion, seventy-five million, five hundred thirty-two thousand, seven hundred eighty".