495978921984 has 960 divisors, whose sum is σ = 1738066534400. Its totient is φ = 124853944320.

The previous prime is 495978921941. The next prime is 495978922031. The reversal of 495978921984 is 489129879594.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6794231772 + ... + 6794231844.

Almost surely, 2^495978921984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 495978921984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (869033267200).

495978921984 is an abundant number, since it is smaller than the sum of its proper divisors (1242087612416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

495978921984 is an equidigital number, since it uses as much as digits as its factorization.

495978921984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 129 counting only the distinct ones).

The product of its digits is 470292480, while the sum is 75.

The spelling of 495978921984 in words is "four hundred ninety-five billion, nine hundred seventy-eight million, nine hundred twenty-one thousand, nine hundred eighty-four".