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11885981037 = 37661856277
BaseRepresentation
bin10110001000111010…
…11010110101101101
31010200100120101201220
423010131122311231
5143320302343122
65243233453553
7600355112640
oct130435326555
933610511656
1011885981037
11504a365527
1223787112b9
131175653098
1480a81ba57
1549874c25c
hex2c475ad6d

11885981037 has 16 divisors (see below), whose sum is σ = 18139393152. Its totient is φ = 6781705920.

The previous prime is 11885981017. The next prime is 11885981059. The reversal of 11885981037 is 73018958811.

It is not a de Polignac number, because 11885981037 - 223 = 11877592429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11885981017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414258 + ... + 442019.

It is an arithmetic number, because the mean of its divisors is an integer number (1133712072).

Almost surely, 211885981037 is an apocalyptic number.

It is an amenable number.

11885981037 is a deficient number, since it is larger than the sum of its proper divisors (6253412115).

11885981037 is an equidigital number, since it uses as much as digits as its factorization.

11885981037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856948.

The product of its (nonzero) digits is 483840, while the sum is 51.

The spelling of 11885981037 in words is "eleven billion, eight hundred eighty-five million, nine hundred eighty-one thousand, thirty-seven".

Divisors: 1 3 7 21 661 1983 4627 13881 856277 2568831 5993939 17981817 565999097 1697997291 3961993679 11885981037