6998498399871 has 54 divisors (see below), whose sum is σ = 11803546993056. Its totient is φ = 3992013168000.

The previous prime is 6998498399861. The next prime is 6998498399881. The reversal of 6998498399871 is 1789938948996.

6998498399871 is a `hidden beast` number, since 6 + 9 + 9 + 8 + 498 + 39 + 9 + 87 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (6998498399861) and next prime (6998498399881).

It is not a de Polignac number, because 6998498399871 - 2¹³ = 6998498391679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6998498399861) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 10803855 + ... + 11433296.

Almost surely, 2^{6998498399871} is an apocalyptic number.

6998498399871 is a deficient number, since it is larger than the sum of its proper divisors (4805048593185).

6998498399871 is a wasteful number, since it uses less digits than its factorization.

6998498399871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22237213 (or 22237182 counting only the distinct ones).

The product of its digits is 15237476352, while the sum is 90.

The spelling of 6998498399871 in words is "six trillion, nine hundred ninety-eight billion, four hundred ninety-eight million, three hundred ninety-nine thousand, eight hundred seventy-one".