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204215301461 = 8913117515679
BaseRepresentation
bin1011111000110000101…
…1100011010101010101
3201112010010010012000202
42332030023203111111
511321213104121321
6233452030350245
720516434264433
oct2761413432525
9645103105022
10204215301461
1179675239616
12336b335b385
13163467247b2
149c53c7bd53
1554a357770b
hex2f8c2e3555

204215301461 has 8 divisors (see below), whose sum is σ = 208086278400. Its totient is φ = 200379356320.

The previous prime is 204215301449. The next prime is 204215301469. The reversal of 204215301461 is 164103512402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204215301461 - 26 = 204215301397 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 (204215301469) 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, 8746181 + ... + 8769498.

It is an arithmetic number, because the mean of its divisors is an integer number (26010784800).

Almost surely, 2204215301461 is an apocalyptic number.

It is an amenable number.

204215301461 is a deficient number, since it is larger than the sum of its proper divisors (3870976939).

204215301461 is a wasteful number, since it uses less digits than its factorization.

204215301461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17515899.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 204215301461 its reverse (164103512402), we get a palindrome (368318813863).

The spelling of 204215301461 in words is "two hundred four billion, two hundred fifteen million, three hundred one thousand, four hundred sixty-one".

Divisors: 1 89 131 11659 17515679 1558895431 2294553949 204215301461