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13879725105844 = 22131973192442531
BaseRepresentation
bin1100100111111010000000…
…0101011010001010110100
31211010212222220111021101001
43021332200011122022310
53304401134111341334
645304131354413044
72631530345541343
oct311764005321264
954125886437331
1013879725105844
1144713a3a84514
121681b97a31184
13798b10b1c220
1435dad4809b5a
1519109bc47714
hexc9fa015a2b4

13879725105844 has 48 divisors (see below), whose sum is σ = 27911864841280. Its totient is φ = 5985732453120.

The previous prime is 13879725105839. The next prime is 13879725105887. The reversal of 13879725105844 is 44850152797831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96149142 + ... + 96293389.

Almost surely, 213879725105844 is an apocalyptic number.

It is an amenable number.

13879725105844 is an abundant number, since it is smaller than the sum of its proper divisors (14032139735436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13879725105844 is a wasteful number, since it uses less digits than its factorization.

13879725105844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192442640 (or 192442638 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 64.

The spelling of 13879725105844 in words is "thirteen trillion, eight hundred seventy-nine billion, seven hundred twenty-five million, one hundred five thousand, eight hundred forty-four".

Divisors: 1 2 4 13 19 26 38 52 73 76 146 247 292 494 949 988 1387 1898 2774 3796 5548 18031 36062 72124 192442531 384885062 769770124 2501752903 3656408089 5003505806 7312816178 10007011612 14048304763 14625632356 28096609526 47533305157 56193219052 95066610314 182627961919 190133220628 266917790497 365255923838 533835580994 730511847676 1067671161988 3469931276461 6939862552922 13879725105844