987940681320 has 64 divisors (see below), whose sum is σ = 2963974965120. Its totient is φ = 263437255424.

The previous prime is 987940681309. The next prime is 987940681327. The reversal of 987940681320 is 23186049789.

987940681320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×987940681320⁴ (a number of 49 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (987940681327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2240629 + ... + 2645051.

It is an arithmetic number, because the mean of its divisors is an integer number (46312108830).

Almost surely, 2^987940681320 is an apocalyptic number.

It is an amenable number.

987940681320 is an abundant number, since it is smaller than the sum of its proper divisors (1976034283800).

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

987940681320 is a wasteful number, since it uses less digits than its factorization.

987940681320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424794 (or 424790 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 987940681320 in words is "nine hundred eighty-seven billion, nine hundred forty million, six hundred eighty-one thousand, three hundred twenty".