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56816180993 = 1113397315951
BaseRepresentation
bin110100111010100000…
…100001111100000001
312102122121200001010202
4310322200201330001
51412324420242433
642033451534545
74050646366355
oct647240417401
9172577601122
1056816180993
1122106286790
12b01775a455
135485c65710
142a6dabb465
151727e9dee8
hexd3a821f01

56816180993 has 8 divisors (see below), whose sum is σ = 66749079936. Its totient is φ = 47677914000.

The previous prime is 56816180987. The next prime is 56816181001. The reversal of 56816180993 is 39908161865.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56816180993 - 212 = 56816176897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56816182993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198657833 + ... + 198658118.

It is an arithmetic number, because the mean of its divisors is an integer number (8343634992).

Almost surely, 256816180993 is an apocalyptic number.

It is an amenable number.

56816180993 is a deficient number, since it is larger than the sum of its proper divisors (9932898943).

56816180993 is a wasteful number, since it uses less digits than its factorization.

56816180993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397315975.

The product of its (nonzero) digits is 2799360, while the sum is 56.

The spelling of 56816180993 in words is "fifty-six billion, eight hundred sixteen million, one hundred eighty thousand, nine hundred ninety-three".

Divisors: 1 11 13 143 397315951 4370475461 5165107363 56816180993