980421959999 has 4 divisors (see below), whose sum is σ = 980426664600. Its totient is φ = 980417255400.

The previous prime is 980421959981. The next prime is 980421960047. The reversal of 980421959999 is 999959124089.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-980421959999 is a prime.

It is a super-2 number, since 2×980421959999² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (980421959899) 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, 2024477 + ... + 2461574.

It is an arithmetic number, because the mean of its divisors is an integer number (245106666150).

Almost surely, 2^980421959999 is an apocalyptic number.

980421959999 is a deficient number, since it is larger than the sum of its proper divisors (4704601).

980421959999 is a wasteful number, since it uses less digits than its factorization.

980421959999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4704600.

The product of its (nonzero) digits is 170061120, while the sum is 74.

The spelling of 980421959999 in words is "nine hundred eighty billion, four hundred twenty-one million, nine hundred fifty-nine thousand, nine hundred ninety-nine".