87338659440 has 40 divisors (see below), whose sum is σ = 270749845008. Its totient is φ = 23290309120.

The previous prime is 87338659411. The next prime is 87338659481. The reversal of 87338659440 is 4495683378.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×87338659440² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181955301 + ... + 181955780.

Almost surely, 2^87338659440 is an apocalyptic number.

87338659440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87338659440 is an abundant number, since it is smaller than the sum of its proper divisors (183411185568).

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

87338659440 is a wasteful number, since it uses less digits than its factorization.

87338659440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363911097 (or 363911091 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 57.

The spelling of 87338659440 in words is "eighty-seven billion, three hundred thirty-eight million, six hundred fifty-nine thousand, four hundred forty".