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18013762977 = 371376261301
BaseRepresentation
bin10000110001101101…
…000011010110100001
31201111102001222021120
4100301231003112201
5243343010403402
612135253242453
71205253313260
oct206155032641
951442058246
1018013762977
117704332821
1235a8933429
13191103bb62
14c2c5b05d7
157066c63bc
hex431b435a1

18013762977 has 16 divisors (see below), whose sum is σ = 27649909632. Its totient is φ = 10218441600.

The previous prime is 18013762969. The next prime is 18013762979. The reversal of 18013762977 is 77926731081.

It is not a de Polignac number, because 18013762977 - 23 = 18013762969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18013762979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3127774 + ... + 3133527.

It is an arithmetic number, because the mean of its divisors is an integer number (1728119352).

Almost surely, 218013762977 is an apocalyptic number.

It is an amenable number.

18013762977 is a deficient number, since it is larger than the sum of its proper divisors (9636146655).

18013762977 is a wasteful number, since it uses less digits than its factorization.

18013762977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6261448.

The product of its (nonzero) digits is 889056, while the sum is 51.

The spelling of 18013762977 in words is "eighteen billion, thirteen million, seven hundred sixty-two thousand, nine hundred seventy-seven".

Divisors: 1 3 7 21 137 411 959 2877 6261301 18783903 43829107 131487321 857798237 2573394711 6004587659 18013762977