87766431197532 has 24 divisors (see below), whose sum is σ = 204788598134400. Its totient is φ = 29255440112496.

The previous prime is 87766431197491. The next prime is 87766431197539. The reversal of 87766431197532 is 23579113466778.

It is a super-2 number, since 2×87766431197532² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87766431197539) 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, 6311569 + ... + 14675447.

It is an arithmetic number, because the mean of its divisors is an integer number (8532858255600).

Almost surely, 2^{87766431197532} is an apocalyptic number.

It is an amenable number.

87766431197532 is an abundant number, since it is smaller than the sum of its proper divisors (117022166936868).

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

87766431197532 is a wasteful number, since it uses less digits than its factorization.

87766431197532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9238345 (or 9238343 counting only the distinct ones).

The product of its digits is 320060160, while the sum is 69.

The spelling of 87766431197532 in words is "eighty-seven trillion, seven hundred sixty-six billion, four hundred thirty-one million, one hundred ninety-seven thousand, five hundred thirty-two".