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52640551451 = 4710926713847
BaseRepresentation
bin110001000001100111…
…110001001000011011
312000212121111002020202
4301001213301020123
51330301440121301
640103245412415
73542324206325
oct610147611033
9160777432222
1052640551451
1120363245484
12a25126a10b
134c6bb404c7
1427952ca615
1515815d566b
hexc419f121b

52640551451 has 16 divisors (see below), whose sum is σ = 54288199680. Its totient is φ = 51015497760.

The previous prime is 52640551427. The next prime is 52640551487. The reversal of 52640551451 is 15415504625.

It is a cyclic number.

It is not a de Polignac number, because 52640551451 - 214 = 52640535067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52640551751) 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, 13681610 + ... + 13685456.

It is an arithmetic number, because the mean of its divisors is an integer number (3393012480).

Almost surely, 252640551451 is an apocalyptic number.

52640551451 is a deficient number, since it is larger than the sum of its proper divisors (1647648229).

52640551451 is a wasteful number, since it uses less digits than its factorization.

52640551451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6674.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 52640551451 in words is "fifty-two billion, six hundred forty million, five hundred fifty-one thousand, four hundred fifty-one".

Divisors: 1 47 109 2671 3847 5123 125537 180809 291139 419323 10275337 13683533 19708181 482940839 1120011733 52640551451