487747465920 has 672 divisors, whose sum is σ = 2032654141440. Its totient is φ = 109142691840.

The previous prime is 487747465901. The next prime is 487747465951. The reversal of 487747465920 is 29564747784.

487747465920 is a `hidden beast` number, since 4 + 8 + 77 + 474 + 6 + 5 + 92 + 0 = 666.

It is a super-2 number, since 2×487747465920² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16046577 + ... + 16076943.

Almost surely, 2^487747465920 is an apocalyptic number.

487747465920 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 487747465920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1016327070720).

487747465920 is an abundant number, since it is smaller than the sum of its proper divisors (1544906675520).

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

487747465920 is a wasteful number, since it uses less digits than its factorization.

487747465920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30430 (or 30401 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 63.

The spelling of 487747465920 in words is "four hundred eighty-seven billion, seven hundred forty-seven million, four hundred sixty-five thousand, nine hundred twenty".