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70580985891 = 31323283278041
BaseRepresentation
bin100000110111011110…
…1000110000000100011
320202011220120120200120
41001232331012000203
52124022213022031
652231403251323
75046030324033
oct1015675060043
9222156516616
1070580985891
1127a2a1433a9
1211819519b43
13686a9167a0
1435b7c4d8c3
151c81624a96
hex106ef46023

70580985891 has 32 divisors (see below), whose sum is σ = 106127519232. Its totient is φ = 41399043840.

The previous prime is 70580985887. The next prime is 70580985899. The reversal of 70580985891 is 19858908507.

It is not a de Polignac number, because 70580985891 - 22 = 70580985887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70580985899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114831 + ... + 392871.

It is an arithmetic number, because the mean of its divisors is an integer number (3316484976).

Almost surely, 270580985891 is an apocalyptic number.

70580985891 is a deficient number, since it is larger than the sum of its proper divisors (35546533341).

70580985891 is a wasteful number, since it uses less digits than its factorization.

70580985891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278363.

The product of its (nonzero) digits is 7257600, while the sum is 60.

The spelling of 70580985891 in words is "seventy billion, five hundred eighty million, nine hundred eighty-five thousand, eight hundred ninety-one".

Divisors: 1 3 13 23 39 69 283 299 849 897 3679 6509 11037 19527 84617 253851 278041 834123 3614533 6394943 10843599 19184829 78685603 83134259 236056809 249402777 1022912839 1809768869 3068738517 5429306607 23526995297 70580985891