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70121164800 = 2123521729463
BaseRepresentation
bin100000101001110001…
…1000001000000000000
320200222212100020201210
41001103203001000000
52122102004233200
652114015530120
75031445031541
oct1012343010000
9220885306653
1070121164800
1127813629a75
121170b529940
1367c658b7bb
143572b564c8
151c56096650
hex10538c1000

70121164800 has 624 divisors, whose sum is σ = 254489783040. Its totient is φ = 16955473920.

The previous prime is 70121164787. The next prime is 70121164847. The reversal of 70121164800 is 846112107.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 151449369 + ... + 151449831.

Almost surely, 270121164800 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 70121164800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127244891520).

70121164800 is an abundant number, since it is smaller than the sum of its proper divisors (184368618240).

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

70121164800 is a wasteful number, since it uses less digits than its factorization.

70121164800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

Adding to 70121164800 its reverse (846112107), we get a palindrome (70967276907).

The spelling of 70121164800 in words is "seventy billion, one hundred twenty-one million, one hundred sixty-four thousand, eight hundred".