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64361052361 = 129074986523
BaseRepresentation
bin111011111100001101…
…111011100011001001
320011010102200012221001
4323330031323203021
52023302412133421
645322252415001
74435632630034
oct737415734311
9204112605831
1064361052361
1125328155271
1210582477461
1360b9104648
143187b5001b
151a1a546691
hexefc37b8c9

64361052361 has 4 divisors (see below), whose sum is σ = 64366051792. Its totient is φ = 64356052932.

The previous prime is 64361052347. The next prime is 64361052391. The reversal of 64361052361 is 16325016346.

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.

It is a cyclic number.

It is not a de Polignac number, because 64361052361 - 213 = 64361044169 is a prime.

It is a super-2 number, since 2×643610523612 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64361052361.

It is not an unprimeable number, because it can be changed into a prime (64361052391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2480355 + ... + 2506168.

It is an arithmetic number, because the mean of its divisors is an integer number (16091512948).

Almost surely, 264361052361 is an apocalyptic number.

It is an amenable number.

64361052361 is a deficient number, since it is larger than the sum of its proper divisors (4999431).

64361052361 is a wasteful number, since it uses less digits than its factorization.

64361052361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4999430.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 64361052361 in words is "sixty-four billion, three hundred sixty-one million, fifty-two thousand, three hundred sixty-one".

Divisors: 1 12907 4986523 64361052361