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47916157129 = 99148351319
BaseRepresentation
bin101100101000000001…
…101000100011001001
311120200100200222121021
4230220001220203021
51241113014012004
634002401312441
73314256421051
oct545001504311
9146610628537
1047916157129
1119359470065
129353035721
13469811b0c9
142467a8c561
1513a696ed54
hexb280688c9

47916157129 has 4 divisors (see below), whose sum is σ = 47964509440. Its totient is φ = 47867804820.

The previous prime is 47916157099. The next prime is 47916157147. The reversal of 47916157129 is 92175161974.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47916157129 - 213 = 47916148937 is a prime.

It is a super-2 number, since 2×479161571292 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47916157829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24174669 + ... + 24176650.

It is an arithmetic number, because the mean of its divisors is an integer number (11991127360).

Almost surely, 247916157129 is an apocalyptic number.

It is an amenable number.

47916157129 is a deficient number, since it is larger than the sum of its proper divisors (48352311).

47916157129 is an equidigital number, since it uses as much as digits as its factorization.

47916157129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48352310.

The product of its digits is 952560, while the sum is 52.

The spelling of 47916157129 in words is "forty-seven billion, nine hundred sixteen million, one hundred fifty-seven thousand, one hundred twenty-nine".

Divisors: 1 991 48351319 47916157129