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11372820857 is a prime number
BaseRepresentation
bin10101001011101111…
…10111100101111001
31002100120222011022022
422211313313211321
5141242420231412
65120303004225
7551554245056
oct124567674571
932316864268
1011372820857
11490672a702
122254899675
1310c3240bc8
1479c5dc02d
15468684a72
hex2a5df7979

11372820857 has 2 divisors, whose sum is σ = 11372820858. Its totient is φ = 11372820856.

The previous prime is 11372820853. The next prime is 11372820881. The reversal of 11372820857 is 75802827311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10562906176 + 809914681 = 102776^2 + 28459^2 .

It is a cyclic number.

It is not a de Polignac number, because 11372820857 - 22 = 11372820853 is a prime.

It is not a weakly prime, because it can be changed into another prime (11372820853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5686410428 + 5686410429.

It is an arithmetic number, because the mean of its divisors is an integer number (5686410429).

Almost surely, 211372820857 is an apocalyptic number.

It is an amenable number.

11372820857 is a deficient number, since it is larger than the sum of its proper divisors (1).

11372820857 is an equidigital number, since it uses as much as digits as its factorization.

11372820857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 11372820857 in words is "eleven billion, three hundred seventy-two million, eight hundred twenty thousand, eight hundred fifty-seven".