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68761132800 = 2835241113773
BaseRepresentation
bin100000000001001111…
…0111001111100000000
320120111002012110120020
41000002132321330000
52111310322222200
651331033413440
74652651661633
oct1000236717400
9216432173506
1068761132800
1127185959888
12113abb6a280
13663a895139
143484289c1a
151bc6998ea0
hex10027b9f00

68761132800 has 432 divisors, whose sum is σ = 234821407968. Its totient is φ = 17707827200.

The previous prime is 68761132711. The next prime is 68761132807. The reversal of 68761132800 is 823116786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68761132807) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88953214 + ... + 88953986.

It is an arithmetic number, because the mean of its divisors is an integer number (543568074).

Almost surely, 268761132800 is an apocalyptic number.

68761132800 is a gapful number since it is divisible by the number (60) 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 68761132800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117410703984).

68761132800 is an abundant number, since it is smaller than the sum of its proper divisors (166060275168).

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

68761132800 is a wasteful number, since it uses less digits than its factorization.

68761132800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956 (or 937 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 68761132800 in words is "sixty-eight billion, seven hundred sixty-one million, one hundred thirty-two thousand, eight hundred".