987324434642 has 90 divisors (see below), whose sum is σ = 1872536948037. Its totient is φ = 390235770288.

The previous prime is 987324434639. The next prime is 987324434671. The reversal of 987324434642 is 246434423789.

It is a happy number.

987324434642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 844191602401 + 143132832241 = 918799^2 + 378329^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=702611.

It is a super-2 number, since 2×987324434642² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 895125863 + ... + 895126965.

Almost surely, 2^987324434642 is an apocalyptic number.

987324434642 is a deficient number, since it is larger than the sum of its proper divisors (885212513395).

987324434642 is an frugal number, since it uses more digits than its factorization.

987324434642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262 (or 1125 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 56.

The spelling of 987324434642 in words is "nine hundred eighty-seven billion, three hundred twenty-four million, four hundred thirty-four thousand, six hundred forty-two".