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72166722201107 = 407923176912609
BaseRepresentation
bin10000011010001010011111…
…110101110110011000010011
3100110112001220221200222002222
4100122022133311312120103
533424334421340413412
6413252533503531255
721125605436331212
oct2032123765663023
9313461827628088
1072166722201107
1120aa380a333276
1281164892b9b2b
1331363a60b7081
1413b6c60911079
1585234e6a4072
hex41a29fd76613

72166722201107 has 4 divisors (see below), whose sum is σ = 72166899521640. Its totient is φ = 72166544880576.

The previous prime is 72166722201061. The next prime is 72166722201109. The reversal of 72166722201107 is 70110222766127.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-72166722201107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72166722201109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88048382 + ... + 88864227.

It is an arithmetic number, because the mean of its divisors is an integer number (18041724880410).

Almost surely, 272166722201107 is an apocalyptic number.

72166722201107 is a deficient number, since it is larger than the sum of its proper divisors (177320533).

72166722201107 is a wasteful number, since it uses less digits than its factorization.

72166722201107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177320532.

The product of its (nonzero) digits is 197568, while the sum is 44.

The spelling of 72166722201107 in words is "seventy-two trillion, one hundred sixty-six billion, seven hundred twenty-two million, two hundred one thousand, one hundred seven".

Divisors: 1 407923 176912609 72166722201107