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64350808361 = 7431453147137
BaseRepresentation
bin111011111011100110…
…110110100100101001
320011002201101202210122
4323323212312210221
52023242301331421
645321245053025
74435446563120
oct737346664451
9204081352718
1064350808361
1125322398854
121057ab57175
1360b6c589c8
143186644ab7
151a196c12ab
hexefb9b6929

64350808361 has 16 divisors (see below), whose sum is σ = 75306405504. Its totient is φ = 53837650944.

The previous prime is 64350808349. The next prime is 64350808393. The reversal of 64350808361 is 16380805346.

It is not a de Polignac number, because 64350808361 - 26 = 64350808297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64350808661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363785 + ... + 510921.

It is an arithmetic number, because the mean of its divisors is an integer number (4706650344).

Almost surely, 264350808361 is an apocalyptic number.

It is an amenable number.

64350808361 is a deficient number, since it is larger than the sum of its proper divisors (10955597143).

64350808361 is a wasteful number, since it uses less digits than its factorization.

64350808361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148640.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 64350808361 in words is "sixty-four billion, three hundred fifty million, eight hundred eight thousand, three hundred sixty-one".

Divisors: 1 7 43 301 1453 10171 62479 147137 437353 1029959 6326891 44288237 213790061 1496530427 9192972623 64350808361