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67210212053 = 83809761591
BaseRepresentation
bin111110100110000010…
…100111001011010101
320102110222212112021002
4332212002213023111
52100121303241203
650513112033045
74566350243045
oct764602471325
9212428775232
1067210212053
112655a45a0a6
1211038692785
13645148465a
1433782cd725
151b35741d88
hexfa60a72d5

67210212053 has 4 divisors (see below), whose sum is σ = 68019973728. Its totient is φ = 66400450380.

The previous prime is 67210212023. The next prime is 67210212071. The reversal of 67210212053 is 35021201276.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67210212053 - 212 = 67210207957 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 (67210212023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404880713 + ... + 404880878.

It is an arithmetic number, because the mean of its divisors is an integer number (17004993432).

Almost surely, 267210212053 is an apocalyptic number.

It is an amenable number.

67210212053 is a deficient number, since it is larger than the sum of its proper divisors (809761675).

67210212053 is an equidigital number, since it uses as much as digits as its factorization.

67210212053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809761674.

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 67210212053 in words is "sixty-seven billion, two hundred ten million, two hundred twelve thousand, fifty-three".

Divisors: 1 83 809761591 67210212053