1987417271371 has 8 divisors (see below), whose sum is σ = 2296854632160. Its totient is φ = 1684360062528.

The previous prime is 1987417271311. The next prime is 1987417271377. The reversal of 1987417271371 is 1731727147891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1987417271371 - 2⁷ = 1987417271243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1987417271377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1595037316 + ... + 1595038561.

It is an arithmetic number, because the mean of its divisors is an integer number (287106829020).

Almost surely, 2^{1987417271371} is an apocalyptic number.

1987417271371 is a deficient number, since it is larger than the sum of its proper divisors (309437360789).

1987417271371 is an equidigital number, since it uses as much as digits as its factorization.

1987417271371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190075973.

The product of its digits is 4148928, while the sum is 58.

The spelling of 1987417271371 in words is "one trillion, nine hundred eighty-seven billion, four hundred seventeen million, two hundred seventy-one thousand, three hundred seventy-one".