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64420203102 = 2361317515009
BaseRepresentation
bin111011111111101111…
…100100101001011110
320011021112222101111020
4323333233210221132
52023413032444402
645332204305010
74440251456133
oct737757445136
9204245871436
1064420203102
1125358586082
121059a242166
1360c8444b98
14319194a58a
151a2082c8bc
hexeffbe4a5e

64420203102 has 16 divisors (see below), whose sum is σ = 129050593680. Its totient is φ = 21438369792.

The previous prime is 64420203097. The next prime is 64420203173. The reversal of 64420203102 is 20130202446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8753827 + ... + 8761182.

It is an arithmetic number, because the mean of its divisors is an integer number (8065662105).

Almost surely, 264420203102 is an apocalyptic number.

64420203102 is an abundant number, since it is smaller than the sum of its proper divisors (64630390578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64420203102 is a wasteful number, since it uses less digits than its factorization.

64420203102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17515627.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 64420203102 its reverse (20130202446), we get a palindrome (84550405548).

The spelling of 64420203102 in words is "sixty-four billion, four hundred twenty million, two hundred three thousand, one hundred two".

Divisors: 1 2 3 6 613 1226 1839 3678 17515009 35030018 52545027 105090054 10736700517 21473401034 32210101551 64420203102