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13872427977 = 3167186714831
BaseRepresentation
bin11001110101101110…
…00111001111001001
31022210210102100122210
430322313013033021
5211402320143402
610212314135333
71000525456302
oct147267071711
938723370583
1013872427977
115979695511
122831a21549
131401063585
149585897a9
15562d3406c
hex33adc73c9

13872427977 has 16 divisors (see below), whose sum is σ = 18618550272. Its totient is φ = 9187362960.

The previous prime is 13872427967. The next prime is 13872427979. The reversal of 13872427977 is 77972427831.

It is not a de Polignac number, because 13872427977 - 211 = 13872425929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13872427979) 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, 927952 + ... + 942782.

It is an arithmetic number, because the mean of its divisors is an integer number (1163659392).

Almost surely, 213872427977 is an apocalyptic number.

It is an amenable number.

13872427977 is a deficient number, since it is larger than the sum of its proper divisors (4746122295).

13872427977 is a wasteful number, since it uses less digits than its factorization.

13872427977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16868.

The product of its digits is 8297856, while the sum is 57.

The spelling of 13872427977 in words is "thirteen billion, eight hundred seventy-two million, four hundred twenty-seven thousand, nine hundred seventy-seven".

Divisors: 1 3 167 501 1867 5601 14831 44493 311789 935367 2476777 7430331 27689477 83068431 4624142659 13872427977