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90691042246 = 2721277304457
BaseRepresentation
bin101010001110110011…
…0110111101111000110
322200002102012021212121
41110131212313233012
52441213401322441
6105355103440154
76360260065660
oct1243546675706
9280072167777
1090691042246
1135509802392
12156b02b605a
13872404630c
1445649c3530
15255bd7edd1
hex151d9b7bc6

90691042246 has 16 divisors (see below), whose sum is σ = 155478175776. Its totient is φ = 38865635136.

The previous prime is 90691042241. The next prime is 90691042291. The reversal of 90691042246 is 64224019609.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90691042241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145650 + ... + 450106.

It is an arithmetic number, because the mean of its divisors is an integer number (9717385986).

Almost surely, 290691042246 is an apocalyptic number.

90691042246 is a deficient number, since it is larger than the sum of its proper divisors (64787133530).

90691042246 is a wasteful number, since it uses less digits than its factorization.

90691042246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325743.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 90691042246 in words is "ninety billion, six hundred ninety-one million, forty-two thousand, two hundred forty-six".

Divisors: 1 2 7 14 21277 42554 148939 297878 304457 608914 2131199 4262398 6477931589 12955863178 45345521123 90691042246