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90808810463 = 719762189591
BaseRepresentation
bin101010010010010100…
…0000111101111011111
322200101121210112111102
41110210220013233133
52441434023413323
6105414511543315
76363220103360
oct1244450075737
9280347715442
1090808810463
113556a22a398
121572382ab3b
13874256b457
1445764bbb67
152567394328
hex1524a07bdf

90808810463 has 16 divisors (see below), whose sum is σ = 109259235840. Its totient is φ = 73728986400.

The previous prime is 90808810447. The next prime is 90808810481. The reversal of 90808810463 is 36401880809.

It is a cyclic number.

It is not a de Polignac number, because 90808810463 - 24 = 90808810447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90808810423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 968798 + ... + 1058388.

It is an arithmetic number, because the mean of its divisors is an integer number (6828702240).

Almost surely, 290808810463 is an apocalyptic number.

90808810463 is a deficient number, since it is larger than the sum of its proper divisors (18450425377).

90808810463 is a wasteful number, since it uses less digits than its factorization.

90808810463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97238.

The product of its (nonzero) digits is 331776, while the sum is 47.

The spelling of 90808810463 in words is "ninety billion, eight hundred eight million, eight hundred ten thousand, four hundred sixty-three".

Divisors: 1 7 19 133 7621 53347 89591 144799 627137 1013593 1702229 11915603 682773011 4779411077 12972687209 90808810463