1487878787841 has 4 divisors (see below), whose sum is σ = 1983838383792. Its totient is φ = 991919191892.

The previous prime is 1487878787831. The next prime is 1487878787851.

1487878787841 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1487878787831) and next prime (1487878787851).

It is a cyclic number.

It is not a de Polignac number, because 1487878787841 - 2⁷ = 1487878787713 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1487878787831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247979797971 + ... + 247979797976.

It is an arithmetic number, because the mean of its divisors is an integer number (495959595948).

Almost surely, 2^{1487878787841} is an apocalyptic number.

It is an amenable number.

1487878787841 is a deficient number, since it is larger than the sum of its proper divisors (495959595951).

1487878787841 is an equidigital number, since it uses as much as digits as its factorization.

1487878787841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495959595950.

The product of its digits is 1258815488, while the sum is 78.

The spelling of 1487878787841 in words is "one trillion, four hundred eighty-seven billion, eight hundred seventy-eight million, seven hundred eighty-seven thousand, eight hundred forty-one".