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13480909538 = 212782364489
BaseRepresentation
bin11001000111000011…
…00101101011100010
31021210111201011022212
430203201211223202
5210102103101123
610105410402122
7655032561155
oct144341455342
937714634285
1013480909538
115798692958
122742890342
13136ac01665
1491c591c9c
1553d798878
hex323865ae2

13480909538 has 16 divisors (see below), whose sum is σ = 20405667840. Its totient is φ = 6679151136.

The previous prime is 13480909517. The next prime is 13480909549. The reversal of 13480909538 is 83590908431.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176798 + ... + 241286.

It is an arithmetic number, because the mean of its divisors is an integer number (1275354240).

Almost surely, 213480909538 is an apocalyptic number.

13480909538 is a deficient number, since it is larger than the sum of its proper divisors (6924758302).

13480909538 is a wasteful number, since it uses less digits than its factorization.

13480909538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65441.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 13480909538 in words is "thirteen billion, four hundred eighty million, nine hundred nine thousand, five hundred thirty-eight".

Divisors: 1 2 127 254 823 1646 64489 104521 128978 209042 8190103 16380206 53074447 106148894 6740454769 13480909538