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70749774480 = 243571121759347
BaseRepresentation
bin100000111100100000…
…0111110001010010000
320202121200011221002210
41001321000332022100
52124343420240410
652300233112120
75053150106040
oct1017100761220
9222550157083
1070749774480
1128006448800
1211865b58640
1368968935a8
1435d2429720
151c91366220
hex107903e290

70749774480 has 960 divisors, whose sum is σ = 297520957440. Its totient is φ = 13562757120.

The previous prime is 70749774439. The next prime is 70749774493. The reversal of 70749774480 is 8447794707.

It is a self number, because there is not a number n which added to its sum of digits gives 70749774480.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 203889667 + ... + 203890013.

It is an arithmetic number, because the mean of its divisors is an integer number (309917664).

Almost surely, 270749774480 is an apocalyptic number.

70749774480 is a gapful number since it is divisible by the number (70) 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 70749774480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148760478720).

70749774480 is an abundant number, since it is smaller than the sum of its proper divisors (226771182960).

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

70749774480 is a wasteful number, since it uses less digits than its factorization.

70749774480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 11063808, while the sum is 57.

The spelling of 70749774480 in words is "seventy billion, seven hundred forty-nine million, seven hundred seventy-four thousand, four hundred eighty".