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161000234899 = 7234314575077
BaseRepresentation
bin1001010111110001011…
…1001001111110010011
3120101120101100100022221
42111330113021332103
510114212030004044
6201543521441511
714426510262640
oct2257427117623
9511511310287
10161000234899
1162309487479
12272527a0297
131224a5599aa
147b146c2dc7
1542c46b8484
hex257c5c9f93

161000234899 has 32 divisors (see below), whose sum is σ = 192904851456. Its totient is φ = 131379874560.

The previous prime is 161000234891. The next prime is 161000234909. The reversal of 161000234899 is 998432000161.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 161000234899 - 23 = 161000234891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161000234891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31709149 + ... + 31714225.

It is an arithmetic number, because the mean of its divisors is an integer number (6028276608).

Almost surely, 2161000234899 is an apocalyptic number.

161000234899 is a deficient number, since it is larger than the sum of its proper divisors (31904616557).

161000234899 is a wasteful number, since it uses less digits than its factorization.

161000234899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5995.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 161000234899 in words is "one hundred sixty-one billion, two hundred thirty-four thousand, eight hundred ninety-nine".

Divisors: 1 7 23 161 431 457 3017 3199 5077 9913 10511 35539 69391 73577 116771 196967 817397 1378769 2188187 2320189 4530241 15317309 16241323 31711687 50328301 53364347 352298107 373550429 1000001459 7000010213 23000033557 161000234899