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78132072882 = 2331643411529
BaseRepresentation
bin100100011000100001…
…0001101000110110010
321110200011021112201010
41020301002031012302
52240003302313012
655520545251350
75434120442643
oct1106102150662
9243604245633
1078132072882
1130154577866
1213186333b56
1374a21508b6
143ad2a5d6ca
1520744e8c3c
hex123108d1b2

78132072882 has 16 divisors (see below), whose sum is σ = 156269463840. Its totient is φ = 26043137952.

The previous prime is 78132072877. The next prime is 78132072883. The reversal of 78132072882 is 28827023187.

It is a super-2 number, since 2×781320728822 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78132072883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15907 + ... + 395622.

It is an arithmetic number, because the mean of its divisors is an integer number (9766841490).

Almost surely, 278132072882 is an apocalyptic number.

78132072882 is an abundant number, since it is smaller than the sum of its proper divisors (78137390958).

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

78132072882 is a wasteful number, since it uses less digits than its factorization.

78132072882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443177.

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 78132072882 in words is "seventy-eight billion, one hundred thirty-two million, seventy-two thousand, eight hundred eighty-two".

Divisors: 1 2 3 6 31643 63286 94929 189858 411529 823058 1234587 2469174 13022012147 26044024294 39066036441 78132072882