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72054645426 = 2324003035857
BaseRepresentation
bin100001100011011001…
…0101010001010110010
320212222121112020112100
41003012302222022302
52140031442123201
653033525041230
75130403244361
oct1030662521262
9225877466470
1072054645426
1128615a72645
1211b6ab56216
136a4401568a
1436b78577d8
151d1abb9886
hex10c6caa2b2

72054645426 has 12 divisors (see below), whose sum is σ = 156118398462. Its totient is φ = 24018215136.

The previous prime is 72054645379. The next prime is 72054645473. The reversal of 72054645426 is 62454645027.

72054645426 is a `hidden beast` number, since 7 + 20 + 546 + 45 + 42 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (72054645379) and next prime (72054645473).

It can be written as a sum of positive squares in only one way, i.e., 45454666401 + 26599979025 = 213201^2 + 163095^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2001517911 + ... + 2001517946.

Almost surely, 272054645426 is an apocalyptic number.

72054645426 is an abundant number, since it is smaller than the sum of its proper divisors (84063753036).

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

72054645426 is a wasteful number, since it uses less digits than its factorization.

72054645426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003035865 (or 4003035862 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 45.

The spelling of 72054645426 in words is "seventy-two billion, fifty-four million, six hundred forty-five thousand, four hundred twenty-six".

Divisors: 1 2 3 6 9 18 4003035857 8006071714 12009107571 24018215142 36027322713 72054645426