498867720321 has 4 divisors (see below), whose sum is σ = 665156960432. Its totient is φ = 332578480212.

The previous prime is 498867720319. The next prime is 498867720343. The reversal of 498867720321 is 123027768894.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 498867720321 - 2¹ = 498867720319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (498867722321) 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, 83144620051 + ... + 83144620056.

It is an arithmetic number, because the mean of its divisors is an integer number (166289240108).

Almost surely, 2^498867720321 is an apocalyptic number.

It is an amenable number.

498867720321 is a deficient number, since it is larger than the sum of its proper divisors (166289240111).

498867720321 is a wasteful number, since it uses less digits than its factorization.

498867720321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166289240110.

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 498867720321 in words is "four hundred ninety-eight billion, eight hundred sixty-seven million, seven hundred twenty thousand, three hundred twenty-one".