998762882851 has 4 divisors (see below), whose sum is σ = 998765381304. Its totient is φ = 998760384400.

The previous prime is 998762882849. The next prime is 998762882867. The reversal of 998762882851 is 158288267899.

It is a semiprime because it is the product of two primes.

It is a 4-Lehmer number, since φ(998762882851) divides (998762882851-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 998762882851 - 2¹ = 998762882849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998762882891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499690 + ... + 1499071.

It is an arithmetic number, because the mean of its divisors is an integer number (249691345326).

Almost surely, 2^998762882851 is an apocalyptic number.

998762882851 is the 499691-st decagonal number.

998762882851 is a deficient number, since it is larger than the sum of its proper divisors (2498453).

998762882851 is a wasteful number, since it uses less digits than its factorization.

998762882851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498452.

The product of its digits is 278691840, while the sum is 73.

The spelling of 998762882851 in words is "nine hundred ninety-eight billion, seven hundred sixty-two million, eight hundred eighty-two thousand, eight hundred fifty-one".