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8001560061 = 321180823839
BaseRepresentation
bin1110111001110111…
…00001110111111101
3202122122100100220100
413130323201313331
5112341344410221
63401553111313
7402200065305
oct73473416775
922578310810
108001560061
113436743560
121673858539
139a696b231
1455c992605
1531c707926
hex1dcee1dfd

8001560061 has 12 divisors (see below), whose sum is σ = 12608519040. Its totient is φ = 4849430280.

The previous prime is 8001560057. The next prime is 8001560069. The reversal of 8001560061 is 1600651008.

It is not a de Polignac number, because 8001560061 - 22 = 8001560057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8001560069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40411821 + ... + 40412018.

It is an arithmetic number, because the mean of its divisors is an integer number (1050709920).

Almost surely, 28001560061 is an apocalyptic number.

It is an amenable number.

8001560061 is a deficient number, since it is larger than the sum of its proper divisors (4606958979).

8001560061 is a wasteful number, since it uses less digits than its factorization.

8001560061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80823856 (or 80823853 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 8001560061 is about 89451.4396809800. The cubic root of 8001560061 is about 2000.1299966336.

The spelling of 8001560061 in words is "eight billion, one million, five hundred sixty thousand, sixty-one".

Divisors: 1 3 9 11 33 99 80823839 242471517 727414551 889062229 2667186687 8001560061