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20624466664 = 2319912955067
BaseRepresentation
bin10011001101010100…
…000110001011101000
31222020100120110110201
4103031110012023220
5314214330413124
613250313521544
71330044034264
oct231524061350
958210513421
1020624466664
118823a7907a
123bb71132b4
131c38b8ba39
14dd91db0a4
1580a9bd144
hex4cd5062e8

20624466664 has 16 divisors (see below), whose sum is σ = 38865204000. Its totient is φ = 10260412272.

The previous prime is 20624466659. The next prime is 20624466679. The reversal of 20624466664 is 46666442602.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6475942 + ... + 6479125.

It is an arithmetic number, because the mean of its divisors is an integer number (2429075250).

Almost surely, 220624466664 is an apocalyptic number.

It is an amenable number.

20624466664 is a deficient number, since it is larger than the sum of its proper divisors (18240737336).

20624466664 is a wasteful number, since it uses less digits than its factorization.

20624466664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12955272 (or 12955268 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 20624466664 in words is "twenty billion, six hundred twenty-four million, four hundred sixty-six thousand, six hundred sixty-four".

Divisors: 1 2 4 8 199 398 796 1592 12955067 25910134 51820268 103640536 2578058333 5156116666 10312233332 20624466664