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64212655456 = 252006645483
BaseRepresentation
bin111011110011010111…
…110101110101100000
320010202002102212122101
4323303113311311200
52023001414433311
645255432020144
74432151365015
oct736327656540
9203662385571
1064212655456
11252614084a4
1210540831654
136094447321
14317216170c
151a0c4d1ec1
hexef35f5d60

64212655456 has 12 divisors (see below), whose sum is σ = 126418665492. Its totient is φ = 32106327712.

The previous prime is 64212655427. The next prime is 64212655457. The reversal of 64212655456 is 65455621246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64212655457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003322710 + ... + 1003322773.

It is an arithmetic number, because the mean of its divisors is an integer number (10534888791).

Almost surely, 264212655456 is an apocalyptic number.

It is an amenable number.

64212655456 is a deficient number, since it is larger than the sum of its proper divisors (62206010036).

64212655456 is a wasteful number, since it uses less digits than its factorization.

64212655456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006645493 (or 2006645485 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 46.

The spelling of 64212655456 in words is "sixty-four billion, two hundred twelve million, six hundred fifty-five thousand, four hundred fifty-six".

Divisors: 1 2 4 8 16 32 2006645483 4013290966 8026581932 16053163864 32106327728 64212655456