Base | Representation |
---|---|
bin | 11111011000101110100… |
… | …001110101100010000001 |
3 | 21122012012212201000212020 |
4 | 133120232201311202001 |
5 | 240314214134021140 |
6 | 4330502314552053 |
7 | 311553600146655 |
oct | 37305641654201 |
9 | 7565185630766 |
10 | 2156854204545 |
11 | 761797a73297 |
12 | 2aa01a138629 |
13 | 12850cb60561 |
14 | 7656c688a65 |
15 | 3b1886c76d0 |
hex | 1f62e875881 |
2156854204545 has 16 divisors (see below), whose sum is σ = 3489741636480. Its totient is φ = 1137397272704.
The previous prime is 2156854204507. The next prime is 2156854204591. The reversal of 2156854204545 is 5454024586512.
It is a cyclic number.
It is not a de Polignac number, because 2156854204545 - 213 = 2156854196353 is a prime.
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, 807809229 + ... + 807811898.
It is an arithmetic number, because the mean of its divisors is an integer number (218108852280).
Almost surely, 22156854204545 is an apocalyptic number.
It is an amenable number.
2156854204545 is a deficient number, since it is larger than the sum of its proper divisors (1332887431935).
2156854204545 is a wasteful number, since it uses less digits than its factorization.
2156854204545 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1615621224.
The product of its (nonzero) digits is 7680000, while the sum is 51.
The spelling of 2156854204545 in words is "two trillion, one hundred fifty-six billion, eight hundred fifty-four million, two hundred four thousand, five hundred forty-five".
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