1987417271461 has 8 divisors (see below), whose sum is σ = 1992608553600. Its totient is φ = 1982232235152.

The previous prime is 1987417271419. The next prime is 1987417271471. The reversal of 1987417271461 is 1641727147891.

It is a happy number.

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 1987417271461 - 2²¹ = 1987415174309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1987417271396 and 1987417271405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987417271471) 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, 923890 + ... + 2197363.

It is an arithmetic number, because the mean of its divisors is an integer number (249076069200).

Almost surely, 2^{1987417271461} is an apocalyptic number.

It is an amenable number.

1987417271461 is a deficient number, since it is larger than the sum of its proper divisors (5191282139).

1987417271461 is a wasteful number, since it uses less digits than its factorization.

1987417271461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3122915.

The product of its digits is 4741632, while the sum is 58.

The spelling of 1987417271461 in words is "one trillion, nine hundred eighty-seven billion, four hundred seventeen million, two hundred seventy-one thousand, four hundred sixty-one".