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56281742293 = 761131807359
BaseRepresentation
bin110100011010101001…
…110011101111010101
312101021101000202001211
4310122221303233111
51410231111223133
641504441021421
74031466626140
oct643251635725
9171241022054
1056281742293
1121961638007
12aaa8784871
1353cc3131ba
142a1cb1d057
1516e60d1bcd
hexd1aa73bd5

56281742293 has 8 divisors (see below), whose sum is σ = 65376450560. Its totient is φ = 47450648880.

The previous prime is 56281742281. The next prime is 56281742333. The reversal of 56281742293 is 39224718265.

It is a happy number.

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 56281742293 - 213 = 56281734101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56281742203) 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, 65903253 + ... + 65904106.

It is an arithmetic number, because the mean of its divisors is an integer number (8172056320).

Almost surely, 256281742293 is an apocalyptic number.

It is an amenable number.

56281742293 is a deficient number, since it is larger than the sum of its proper divisors (9094708267).

56281742293 is a wasteful number, since it uses less digits than its factorization.

56281742293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131807427.

The product of its digits is 1451520, while the sum is 49.

The spelling of 56281742293 in words is "fifty-six billion, two hundred eighty-one million, seven hundred forty-two thousand, two hundred ninety-three".

Divisors: 1 7 61 427 131807359 922651513 8040248899 56281742293