Search a number
-
+
68691429558048 = 253111719414911931
BaseRepresentation
bin11111001111001011110000…
…10000100000011100100000
3100000012211120211110202102110
433213211320100200130200
533000420021431324143
6402032223533315320
720316535442300163
oct1747457020403440
9300184524422373
1068691429558048
111a983965227060
127854a38935b40
132c4376014c64b
1412d697bd61ada
157e1c4d495533
hex3e7978420720

68691429558048 has 384 divisors, whose sum is σ = 224587677404160. Its totient is φ = 18107338752000.

The previous prime is 68691429557951. The next prime is 68691429558061. The reversal of 68691429558048 is 84085592419686.

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, 11528643 + ... + 16440573.

It is an arithmetic number, because the mean of its divisors is an integer number (584863743240).

Almost surely, 268691429558048 is an apocalyptic number.

68691429558048 is a gapful number since it is divisible by the number (68) 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 68691429558048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112293838702080).

68691429558048 is an abundant number, since it is smaller than the sum of its proper divisors (155896247846112).

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

68691429558048 is a wasteful number, since it uses less digits than its factorization.

68691429558048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4912032 (or 4912024 counting only the distinct ones).

The product of its (nonzero) digits is 1194393600, while the sum is 75.

The spelling of 68691429558048 in words is "sixty-eight trillion, six hundred ninety-one billion, four hundred twenty-nine million, five hundred fifty-eight thousand, forty-eight".