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6161404379 = 1319167149371
BaseRepresentation
bin1011011110011111…
…11001000111011011
3120220101202202212012
411233033321013123
5100104304420004
62455220140135
7305454034034
oct55717710733
916811682765
106161404379
112681a52339
12123b53764b
1377265b810
14426425a8b
15260dbb46e
hex16f3f91db

6161404379 has 16 divisors (see below), whose sum is σ = 7026458880. Its totient is φ = 5355810720.

The previous prime is 6161404373. The next prime is 6161404399. The reversal of 6161404379 is 9734041616.

It is a de Polignac number, because none of the positive numbers 2k-6161404379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6161404373) 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, 33437 + ... + 115934.

It is an arithmetic number, because the mean of its divisors is an integer number (439153680).

Almost surely, 26161404379 is an apocalyptic number.

6161404379 is a deficient number, since it is larger than the sum of its proper divisors (865054501).

6161404379 is a wasteful number, since it uses less digits than its factorization.

6161404379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149570.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 6161404379 is about 78494.6136941892. The cubic root of 6161404379 is about 1833.2705882401.

The spelling of 6161404379 in words is "six billion, one hundred sixty-one million, four hundred four thousand, three hundred seventy-nine".

Divisors: 1 13 19 167 247 2171 3173 41249 149371 1941823 2838049 24944957 36894637 324284441 473954183 6161404379