1987707053243 has 8 divisors (see below), whose sum is σ = 2102944147920. Its totient is φ = 1873532052000.

The previous prime is 1987707053231. The next prime is 1987707053273. The reversal of 1987707053243 is 3423507077891.

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 1987707053243 - 2¹⁸ = 1987706791099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1987707053273) 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, 265519508 + ... + 265526993.

It is an arithmetic number, because the mean of its divisors is an integer number (262868018490).

Almost surely, 2^{1987707053243} is an apocalyptic number.

1987707053243 is a deficient number, since it is larger than the sum of its proper divisors (115237094677).

1987707053243 is a wasteful number, since it uses less digits than its factorization.

1987707053243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531046717.

The product of its (nonzero) digits is 8890560, while the sum is 56.

The spelling of 1987707053243 in words is "one trillion, nine hundred eighty-seven billion, seven hundred seven million, fifty-three thousand, two hundred forty-three".