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36981984985 = 5113112162057
BaseRepresentation
bin100010011100010011…
…000100111011011001
310112110100010111012121
4202130103010323121
51101214342004420
624553404141241
72446306454131
oct423423047331
9115410114177
1036981984985
1114758403760
127201237821
133644a3126a
141b0b835ac1
15e66a852aa
hex89c4c4ed9

36981984985 has 16 divisors (see below), whose sum is σ = 48568470912. Its totient is φ = 26809494400.

The previous prime is 36981984983. The next prime is 36981985003. The reversal of 36981984985 is 58948918963.

It is not a de Polignac number, because 36981984985 - 21 = 36981984983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36981984983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1063924 + ... + 1098133.

It is an arithmetic number, because the mean of its divisors is an integer number (3035529432).

Almost surely, 236981984985 is an apocalyptic number.

It is an amenable number.

36981984985 is a deficient number, since it is larger than the sum of its proper divisors (11586485927).

36981984985 is a wasteful number, since it uses less digits than its factorization.

36981984985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162384.

The product of its digits is 134369280, while the sum is 70.

The spelling of 36981984985 in words is "thirty-six billion, nine hundred eighty-one million, nine hundred eighty-four thousand, nine hundred eighty-five".

Divisors: 1 5 11 55 311 1555 3421 17105 2162057 10810285 23782627 118913135 672399727 3361998635 7396396997 36981984985