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64621611341 = 7191513217727
BaseRepresentation
bin111100001011101111…
…111000100101001101
320011210120221222122122
4330023233320211031
52024321113030331
645404201222325
74445245430150
oct741357704515
9204716858578
1064621611341
1125451240071
12106357919a5
13612b0a3161
1431b05b7c97
151a3336417b
hexf0bbf894d

64621611341 has 16 divisors (see below), whose sum is σ = 78255144960. Its totient is φ = 52127161200.

The previous prime is 64621611331. The next prime is 64621611343. The reversal of 64621611341 is 14311612646.

It is not a de Polignac number, because 64621611341 - 214 = 64621594957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64621611343) 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, 1588781 + ... + 1628946.

It is an arithmetic number, because the mean of its divisors is an integer number (4890946560).

Almost surely, 264621611341 is an apocalyptic number.

It is an amenable number.

64621611341 is a deficient number, since it is larger than the sum of its proper divisors (13633533619).

64621611341 is a wasteful number, since it uses less digits than its factorization.

64621611341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217904.

The product of its digits is 20736, while the sum is 35.

The spelling of 64621611341 in words is "sixty-four billion, six hundred twenty-one million, six hundred eleven thousand, three hundred forty-one".

Divisors: 1 7 19 133 151 1057 2869 20083 3217727 22524089 61136813 427957691 485876777 3401137439 9231658763 64621611341