1487339578881 has 24 divisors (see below), whose sum is σ = 2313680479656. Its totient is φ = 915269621760.

The previous prime is 1487339578861. The next prime is 1487339578891. The reversal of 1487339578881 is 1888759337841.

It is a happy number.

1487339578881 is a `hidden beast` number, since 1 + 4 + 87 + 3 + 395 + 7 + 88 + 81 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 23045972481 + 1464293606400 = 151809^2 + 1210080^2 .

It is not a de Polignac number, because 1487339578881 - 2⁹ = 1487339578369 is a prime.

It is a super-2 number, since 2×1487339578881² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1487339578811) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 12268321 + ... + 12388961.

It is an arithmetic number, because the mean of its divisors is an integer number (96403353319).

Almost surely, 2^{1487339578881} is an apocalyptic number.

It is an amenable number.

1487339578881 is a deficient number, since it is larger than the sum of its proper divisors (826340900775).

1487339578881 is a wasteful number, since it uses less digits than its factorization.

1487339578881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226033 (or 226030 counting only the distinct ones).

The product of its digits is 325140480, while the sum is 72.

The spelling of 1487339578881 in words is "one trillion, four hundred eighty-seven billion, three hundred thirty-nine million, five hundred seventy-eight thousand, eight hundred eighty-one".