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161390060284 = 2280950999781
BaseRepresentation
bin1001011001001110011…
…0001110001011111100
3120102120112212112020011
42112103212032023330
510121011323412114
6202050325033004
714442252610045
oct2262346161374
9512515775204
10161390060284
1162499533012
1227341255764
13122b02480bb
147b503998cc
1542e8a1c1c4
hex259398e2fc

161390060284 has 24 divisors (see below), whose sum is σ = 282866094000. Its totient is φ = 80571239040.

The previous prime is 161390060261. The next prime is 161390060327. The reversal of 161390060284 is 482060093161.

It is a congruent 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, 16495474 + ... + 16505254.

It is an arithmetic number, because the mean of its divisors is an integer number (11786087250).

Almost surely, 2161390060284 is an apocalyptic number.

It is an amenable number.

161390060284 is a deficient number, since it is larger than the sum of its proper divisors (121476033716).

161390060284 is a wasteful number, since it uses less digits than its factorization.

161390060284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15693 (or 15691 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 161390060284 in words is "one hundred sixty-one billion, three hundred ninety million, sixty thousand, two hundred eighty-four".

Divisors: 1 2 4 809 1618 3236 5099 9781 10198 19562 20396 39124 4125091 7912829 8250182 15825658 16500364 31651316 49873319 99746638 199493276 40347515071 80695030142 161390060284