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70206215213 = 647108510379
BaseRepresentation
bin100000101100010011…
…1011101010000101101
320201012210101020222002
41001120213131100231
52122240242341323
652130254502045
75033526661121
oct1013047352055
9221183336862
1070206215213
112785763a672
1211733b04925
13680b0998a4
143580175581
151c5d796828
hex10589dd42d

70206215213 has 4 divisors (see below), whose sum is σ = 70314726240. Its totient is φ = 70097704188.

The previous prime is 70206215207. The next prime is 70206215237. The reversal of 70206215213 is 31251260207.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31251260207 = 53589646419.

It is a cyclic number.

It is not a de Polignac number, because 70206215213 - 28 = 70206214957 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 (70206215203) 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 3 ways as a sum of consecutive naturals, for example, 54254543 + ... + 54255836.

It is an arithmetic number, because the mean of its divisors is an integer number (17578681560).

Almost surely, 270206215213 is an apocalyptic number.

It is an amenable number.

70206215213 is a deficient number, since it is larger than the sum of its proper divisors (108511027).

70206215213 is a wasteful number, since it uses less digits than its factorization.

70206215213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108511026.

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

The spelling of 70206215213 in words is "seventy billion, two hundred six million, two hundred fifteen thousand, two hundred thirteen".

Divisors: 1 647 108510379 70206215213