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671155501263649 is a prime number
BaseRepresentation
bin1001100010011010011001000…
…1001111011110101100100001
310021000100211122212000000212221
42120212212101033132230201
51200432202431310414044
610335232325242151041
7261240245662510063
oct23046462117365441
93230324585000787
10671155501263649
1118493a4a4525996
12633365234b2481
1322a658cc9c54ac
14bba4157393733
15528d464e78484
hex26269913deb21

671155501263649 has 2 divisors, whose sum is σ = 671155501263650. Its totient is φ = 671155501263648.

The previous prime is 671155501263617. The next prime is 671155501263677. The reversal of 671155501263649 is 946362105551176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670321873830625 + 833627433024 = 25890575^2 + 913032^2 .

It is a cyclic number.

It is not a de Polignac number, because 671155501263649 - 25 = 671155501263617 is a prime.

It is not a weakly prime, because it can be changed into another prime (671155501293649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335577750631824 + 335577750631825.

It is an arithmetic number, because the mean of its divisors is an integer number (335577750631825).

Almost surely, 2671155501263649 is an apocalyptic number.

It is an amenable number.

671155501263649 is a deficient number, since it is larger than the sum of its proper divisors (1).

671155501263649 is an equidigital number, since it uses as much as digits as its factorization.

671155501263649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824000, while the sum is 61.

The spelling of 671155501263649 in words is "six hundred seventy-one trillion, one hundred fifty-five billion, five hundred one million, two hundred sixty-three thousand, six hundred forty-nine".