489495977880 has 512 divisors, whose sum is σ = 1857202421760. Its totient is φ = 100457994240.

The previous prime is 489495977827. The next prime is 489495977903. The reversal of 489495977880 is 88779594984.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is a junction number, because it is equal to n+sod(n) for n = 489495977796 and 489495977805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 85708225 + ... + 85713935.

It is an arithmetic number, because the mean of its divisors is an integer number (3627348480).

Almost surely, 2^489495977880 is an apocalyptic number.

489495977880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489495977880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (928601210880).

489495977880 is an abundant number, since it is smaller than the sum of its proper divisors (1367706443880).

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

489495977880 is a wasteful number, since it uses less digits than its factorization.

489495977880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5959 (or 5955 counting only the distinct ones).

The product of its (nonzero) digits is 1463132160, while the sum is 78.

The spelling of 489495977880 in words is "four hundred eighty-nine billion, four hundred ninety-five million, nine hundred seventy-seven thousand, eight hundred eighty".