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11214180487 = 17962649053
BaseRepresentation
bin10100111000110101…
…01101000010000111
31001221112110101122001
422130122231002013
5140431312233422
65052434450131
7544616650516
oct123432550207
931845411561
1011214180487
114835126864
12220b733947
131099408273
1478550467d
1545979a227
hex29c6ad087

11214180487 has 4 divisors (see below), whose sum is σ = 11276829720. Its totient is φ = 11151531256.

The previous prime is 11214180469. The next prime is 11214180499. The reversal of 11214180487 is 78408141211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78408141211 = 281279032531.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-11214180487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11214180287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31324348 + ... + 31324705.

It is an arithmetic number, because the mean of its divisors is an integer number (2819207430).

Almost surely, 211214180487 is an apocalyptic number.

11214180487 is a deficient number, since it is larger than the sum of its proper divisors (62649233).

11214180487 is an equidigital number, since it uses as much as digits as its factorization.

11214180487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62649232.

The product of its (nonzero) digits is 14336, while the sum is 37.

The spelling of 11214180487 in words is "eleven billion, two hundred fourteen million, one hundred eighty thousand, four hundred eighty-seven".

Divisors: 1 179 62649053 11214180487