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68709231360 = 28325711292671
BaseRepresentation
bin111111111111011000…
…111010101100000000
320120100110112121011200
4333333120322230000
52111204030400420
651321541141200
74651451554530
oct777730725400
9216313477150
1068709231360
112715962a530
12113966ba800
13662cbc2423
14347b4194c0
151bc2145b90
hexfff63ab00

68709231360 has 864 divisors, whose sum is σ = 306721658880. Its totient is φ = 13779763200.

The previous prime is 68709231307. The next prime is 68709231373. The reversal of 68709231360 is 6313290786.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25722825 + ... + 25725495.

It is an arithmetic number, because the mean of its divisors is an integer number (355001920).

Almost surely, 268709231360 is an apocalyptic number.

68709231360 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 68709231360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153360829440).

68709231360 is an abundant number, since it is smaller than the sum of its proper divisors (238012427520).

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

68709231360 is a wasteful number, since it uses less digits than its factorization.

68709231360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745 (or 2728 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 68709231360 in words is "sixty-eight billion, seven hundred nine million, two hundred thirty-one thousand, three hundred sixty".