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20311414445 = 571734136831
BaseRepresentation
bin10010111010101001…
…111001011010101101
31221102112111202120002
4102322221321122231
5313044210230240
613155252034045
71316223113510
oct227251713255
957375452502
1020311414445
11868329a333
123b2a302925
131bb907103a
14da97cad77
157dd281d15
hex4baa796ad

20311414445 has 16 divisors (see below), whose sum is σ = 29494222848. Its totient is φ = 13108542720.

The previous prime is 20311414433. The next prime is 20311414451. The reversal of 20311414445 is 54441411302.

It is not a de Polignac number, because 20311414445 - 26 = 20311414381 is a prime.

It is a Duffinian 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, 17067821 + ... + 17069010.

It is an arithmetic number, because the mean of its divisors is an integer number (1843388928).

Almost surely, 220311414445 is an apocalyptic number.

It is an amenable number.

20311414445 is a deficient number, since it is larger than the sum of its proper divisors (9182808403).

20311414445 is a wasteful number, since it uses less digits than its factorization.

20311414445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34136860.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 20311414445 its reverse (54441411302), we get a palindrome (74752825747).

The spelling of 20311414445 in words is "twenty billion, three hundred eleven million, four hundred fourteen thousand, four hundred forty-five".

Divisors: 1 5 7 17 35 85 119 595 34136831 170684155 238957817 580326127 1194789085 2901630635 4062282889 20311414445