1987873903711 has 12 divisors (see below), whose sum is σ = 2060429295960. Its totient is φ = 1917309623840.

The previous prime is 1987873903679. The next prime is 1987873903723. The reversal of 1987873903711 is 1173093787891.

It is not a de Polignac number, because 1987873903711 - 2⁵ = 1987873903679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987873903511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5831560 + ... + 6163021.

It is an arithmetic number, because the mean of its divisors is an integer number (171702441330).

Almost surely, 2^{1987873903711} is an apocalyptic number.

1987873903711 is a deficient number, since it is larger than the sum of its proper divisors (72555392249).

1987873903711 is an equidigital number, since it uses as much as digits as its factorization.

1987873903711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11994746 (or 11994693 counting only the distinct ones).

The product of its (nonzero) digits is 16003008, while the sum is 64.

The spelling of 1987873903711 in words is "one trillion, nine hundred eighty-seven billion, eight hundred seventy-three million, nine hundred three thousand, seven hundred eleven".