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6142172169 = 371791633991
BaseRepresentation
bin1011011100001101…
…00001110000001001
3120212001120200020010
411232012201300021
5100034344002134
62453252022133
7305131413330
oct55606416011
916761520203
106142172169
112672106951
121235001949
1376b686a03
14423a5ad17
1525e36cce9
hex16e1a1c09

6142172169 has 16 divisors (see below), whose sum is σ = 9411793920. Its totient is φ = 3490202640.

The previous prime is 6142172147. The next prime is 6142172177. The reversal of 6142172169 is 9612712416.

It is not a de Polignac number, because 6142172169 - 212 = 6142168073 is a prime.

It is a super-2 number, since 2×61421721692 = 75452557907276329122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6142172119) 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, 813237 + ... + 820754.

It is an arithmetic number, because the mean of its divisors is an integer number (588237120).

Almost surely, 26142172169 is an apocalyptic number.

It is an amenable number.

6142172169 is a deficient number, since it is larger than the sum of its proper divisors (3269621751).

6142172169 is a wasteful number, since it uses less digits than its factorization.

6142172169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634180.

The product of its digits is 36288, while the sum is 39.

The square root of 6142172169 is about 78372.0113879949. The cubic root of 6142172169 is about 1831.3611429722.

The spelling of 6142172169 in words is "six billion, one hundred forty-two million, one hundred seventy-two thousand, one hundred sixty-nine".

Divisors: 1 3 7 21 179 537 1253 3759 1633991 4901973 11437937 34313811 292484389 877453167 2047390723 6142172169