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61310553667 = 1129375194489
BaseRepresentation
bin111001000110011001…
…001100111001000011
312212020211121211101221
4321012121030321003
52001031000204132
644055441535511
74300222051606
oct710631147103
9185224554357
1061310553667
1124002233470
12ba70944597
135a2111ba2c
142d7896033d
1518dc829e97
hexe4664ce43

61310553667 has 16 divisors (see below), whose sum is σ = 71060623200. Its totient is φ = 52360439040.

The previous prime is 61310553641. The next prime is 61310553679. The reversal of 61310553667 is 76635501316.

It is a cyclic number.

It is not a de Polignac number, because 61310553667 - 27 = 61310553539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61310556667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2585442 + ... + 2609047.

It is an arithmetic number, because the mean of its divisors is an integer number (4441288950).

Almost surely, 261310553667 is an apocalyptic number.

61310553667 is a deficient number, since it is larger than the sum of its proper divisors (9750069533).

61310553667 is a wasteful number, since it uses less digits than its factorization.

61310553667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194566.

The product of its (nonzero) digits is 340200, while the sum is 43.

The spelling of 61310553667 in words is "sixty-one billion, three hundred ten million, five hundred fifty-three thousand, six hundred sixty-seven".

Divisors: 1 11 29 37 319 407 1073 11803 5194489 57139379 150640181 192196093 1657041991 2114157023 5573686697 61310553667