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80715100047 = 3139313618407
BaseRepresentation
bin100101100101011111…
…1101010111110001111
321201100011200220211220
41023022333222332033
52310301031200142
6101025140414423
75555124013251
oct1131277527617
9251304626756
1080715100047
113125a62a35a
12137873a7413
1377c433023a
143c99b23cd1
1521761752ec
hex12cafeaf8f

80715100047 has 16 divisors (see below), whose sum is σ = 108740862720. Its totient is φ = 53252177472.

The previous prime is 80715099947. The next prime is 80715100051. The reversal of 80715100047 is 74000151708.

It is not a de Polignac number, because 80715100047 - 28 = 80715099791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80715099990 and 80715100017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80715100087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178683 + ... + 439724.

It is an arithmetic number, because the mean of its divisors is an integer number (6796303920).

Almost surely, 280715100047 is an apocalyptic number.

80715100047 is a deficient number, since it is larger than the sum of its proper divisors (28025762673).

80715100047 is a wasteful number, since it uses less digits than its factorization.

80715100047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618862.

The product of its (nonzero) digits is 7840, while the sum is 33.

The spelling of 80715100047 in words is "eighty billion, seven hundred fifteen million, one hundred thousand, forty-seven".

Divisors: 1 3 139 313 417 939 43507 130521 618407 1855221 85958573 193561391 257875719 580684173 26905033349 80715100047