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10156862161 is a prime number
BaseRepresentation
bin10010111010110010…
…10110101011010001
3222012211221001120001
421131121112223101
5131300124042121
64355504450001
7506460622015
oct113531265321
928184831501
1010156862161
114342313966
121b75619901
13c5b34c914
146c4d16545
153e6a45991
hex25d656ad1

10156862161 has 2 divisors, whose sum is σ = 10156862162. Its totient is φ = 10156862160.

The previous prime is 10156862153. The next prime is 10156862203. The reversal of 10156862161 is 16126865101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5824589761 + 4332272400 = 76319^2 + 65820^2 .

It is an emirp because it is prime and its reverse (16126865101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10156862161 - 23 = 10156862153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10156862161.

It is not a weakly prime, because it can be changed into another prime (10156862461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5078431080 + 5078431081.

It is an arithmetic number, because the mean of its divisors is an integer number (5078431081).

Almost surely, 210156862161 is an apocalyptic number.

It is an amenable number.

10156862161 is a deficient number, since it is larger than the sum of its proper divisors (1).

10156862161 is an equidigital number, since it uses as much as digits as its factorization.

10156862161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 37.

The spelling of 10156862161 in words is "ten billion, one hundred fifty-six million, eight hundred sixty-two thousand, one hundred sixty-one".