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130878816271 = 718696973753
BaseRepresentation
bin111100111100011111…
…1000100000000001111
3110111211011120201220121
41321320333010000033
54121014434110041
6140042551125411
712312204403630
oct1717077040017
9414734521817
10130878816271
1150561752875
1221447073867
13c459c92068
1464980ad887
1536100a87d1
hex1e78fc400f

130878816271 has 4 divisors (see below), whose sum is σ = 149575790032. Its totient is φ = 112181842512.

The previous prime is 130878816253. The next prime is 130878816287. The reversal of 130878816271 is 172618878031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130878816271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130878816251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9348486870 + ... + 9348486883.

It is an arithmetic number, because the mean of its divisors is an integer number (37393947508).

Almost surely, 2130878816271 is an apocalyptic number.

130878816271 is a deficient number, since it is larger than the sum of its proper divisors (18696973761).

130878816271 is an equidigital number, since it uses as much as digits as its factorization.

130878816271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18696973760.

The product of its (nonzero) digits is 903168, while the sum is 52.

The spelling of 130878816271 in words is "one hundred thirty billion, eight hundred seventy-eight million, eight hundred sixteen thousand, two hundred seventy-one".

Divisors: 1 7 18696973753 130878816271