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487508964640 = 255171961154643
BaseRepresentation
bin1110001100000011100…
…11000111010100100000
31201121100100010101000021
413012001303013110200
530441404243332030
61011543013003224
750135632553545
oct7060163072440
91647310111007
10487508964640
1117882a112785
127a595923514
1336c8334c6a9
141984a304bcc
15ca3421a97a
hex7181cc7520

487508964640 has 192 divisors, whose sum is σ = 1304725242240. Its totient is φ = 171021680640.

The previous prime is 487508964629. The next prime is 487508964707. The reversal of 487508964640 is 46469805784.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3075159 + ... + 3229801.

It is an arithmetic number, because the mean of its divisors is an integer number (6795443970).

Almost surely, 2487508964640 is an apocalyptic number.

487508964640 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 487508964640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652362621120).

487508964640 is an abundant number, since it is smaller than the sum of its proper divisors (817216277600).

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

487508964640 is a wasteful number, since it uses less digits than its factorization.

487508964640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154755 (or 154747 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 61.

The spelling of 487508964640 in words is "four hundred eighty-seven billion, five hundred eight million, nine hundred sixty-four thousand, six hundred forty".