498779015997 has 4 divisors (see below), whose sum is σ = 665038688000. Its totient is φ = 332519343996.

The previous prime is 498779015953. The next prime is 498779016019. The reversal of 498779015997 is 799510977894.

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 498779015997 - 2¹² = 498779011901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (498779015297) 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, 83129835997 + ... + 83129836002.

It is an arithmetic number, because the mean of its divisors is an integer number (166259672000).

Almost surely, 2^498779015997 is an apocalyptic number.

It is an amenable number.

498779015997 is a deficient number, since it is larger than the sum of its proper divisors (166259672003).

498779015997 is a wasteful number, since it uses less digits than its factorization.

498779015997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166259672002.

The product of its (nonzero) digits is 360067680, while the sum is 75.

The spelling of 498779015997 in words is "four hundred ninety-eight billion, seven hundred seventy-nine million, fifteen thousand, nine hundred ninety-seven".