487256366520 has 576 divisors, whose sum is σ = 2026299356640. Its totient is φ = 101243197440.

The previous prime is 487256366503. The next prime is 487256366521. The reversal of 487256366520 is 25663652784.

487256366520 is a `hidden beast` number, since 4 + 8 + 7 + 2 + 56 + 3 + 66 + 520 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487256366521) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 23468464 + ... + 23489216.

Almost surely, 2^487256366520 is an apocalyptic number.

487256366520 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 487256366520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1013149678320).

487256366520 is an abundant number, since it is smaller than the sum of its proper divisors (1539042990120).

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

487256366520 is a wasteful number, since it uses less digits than its factorization.

487256366520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20817 (or 20781 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 54.

It can be divided in two parts, 487256 and 366520, that added together give a square (853776 = 924²).

The spelling of 487256366520 in words is "four hundred eighty-seven billion, two hundred fifty-six million, three hundred sixty-six thousand, five hundred twenty".