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57998911680 = 263357194547
BaseRepresentation
bin110110000001000000…
…010010100011000000
312112201001011222122000
4312001000102203000
51422240210133210
642351101544000
74122160420653
oct660100224300
9175631158560
1057998911680
1122662967866
12b2a7875000
135613cc1668
142b42bd389a
151796c27ac0
hexd810128c0

57998911680 has 224 divisors, whose sum is σ = 207491258880. Its totient is φ = 15248378880.

The previous prime is 57998911669. The next prime is 57998911687. The reversal of 57998911680 is 8611989975.

It is a super-3 number, since 3×579989116803 (a number of 33 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (57998911687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 566167 + ... + 660713.

Almost surely, 257998911680 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 57998911680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103745629440).

57998911680 is an abundant number, since it is smaller than the sum of its proper divisors (149492347200).

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

57998911680 is a wasteful number, since it uses less digits than its factorization.

57998911680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94644 (or 94628 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 63.

The spelling of 57998911680 in words is "fifty-seven billion, nine hundred ninety-eight million, nine hundred eleven thousand, six hundred eighty".