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42997218880 = 26571119293167
BaseRepresentation
bin101000000010110101…
…010111111001000000
311002222112212000212011
4220002311113321000
51201024242001010
631430323342304
73051340221160
oct500265277100
9132875760764
1042997218880
1117264899a40
1283bb821994
134093001c65
14211c68c5a0
1511b9bcba8a
hexa02d57e40

42997218880 has 448 divisors, whose sum is σ = 139047321600. Its totient is φ = 12254699520.

The previous prime is 42997218871. The next prime is 42997218917. The reversal of 42997218880 is 8881279924.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (58).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13575057 + ... + 13578223.

Almost surely, 242997218880 is an apocalyptic number.

42997218880 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 42997218880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69523660800).

42997218880 is an abundant number, since it is smaller than the sum of its proper divisors (96050102720).

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

42997218880 is a wasteful number, since it uses less digits than its factorization.

42997218880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250 (or 3240 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 58.

The spelling of 42997218880 in words is "forty-two billion, nine hundred ninety-seven million, two hundred eighteen thousand, eight hundred eighty".