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10081013885 = 52016202777
BaseRepresentation
bin10010110001110000…
…00001000001111101
3222000120012120021122
421120320001001331
5131121214421020
64344155040325
7504550130015
oct113070010175
928016176248
1010081013885
114303518a38
121b541400a5
13c48714197
146b8c10c45
153e0062125
hex258e0107d

10081013885 has 4 divisors (see below), whose sum is σ = 12097216668. Its totient is φ = 8064811104.

The previous prime is 10081013861. The next prime is 10081013911. The reversal of 10081013885 is 58831018001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58831018001 = 78404431143.

It can be written as a sum of positive squares in 2 ways, for example, as 4719552601 + 5361461284 = 68699^2 + 73222^2 .

It is a cyclic number.

It is not a de Polignac number, because 10081013885 - 28 = 10081013629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008101384 + ... + 1008101393.

It is an arithmetic number, because the mean of its divisors is an integer number (3024304167).

Almost surely, 210081013885 is an apocalyptic number.

It is an amenable number.

10081013885 is a deficient number, since it is larger than the sum of its proper divisors (2016202783).

10081013885 is an equidigital number, since it uses as much as digits as its factorization.

10081013885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016202782.

The product of its (nonzero) digits is 7680, while the sum is 35.

The spelling of 10081013885 in words is "ten billion, eighty-one million, thirteen thousand, eight hundred eighty-five".

Divisors: 1 5 2016202777 10081013885