328587555531 has 16 divisors (see below), whose sum is σ = 438609600000. Its totient is φ = 218812063008.

The previous prime is 328587555509. The next prime is 328587555539. The reversal of 328587555531 is 135555785823.

It is not a de Polignac number, because 328587555531 - 2⁶ = 328587555467 is a prime.

It is a super-2 number, since 2×328587555531² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (328587555539) 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, 12625470 + ... + 12651468.

It is an arithmetic number, because the mean of its divisors is an integer number (27413100000).

Almost surely, 2^328587555531 is an apocalyptic number.

328587555531 is a deficient number, since it is larger than the sum of its proper divisors (110022044469).

328587555531 is a wasteful number, since it uses less digits than its factorization.

328587555531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30578.

The product of its digits is 25200000, while the sum is 57.

The spelling of 328587555531 in words is "three hundred twenty-eight billion, five hundred eighty-seven million, five hundred fifty-five thousand, five hundred thirty-one".