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51270830970 = 2351918947789
BaseRepresentation
bin101111101111111110…
…101100101101111010
311220100011010001222120
4233233332230231322
51320000313042340
635315315502110
73463352605212
oct575776545572
9156304101876
1051270830970
111a820058187
129b2a5b7936
134ab1134008
1426a541b242
1515012224d0
hexbeffacb7a

51270830970 has 32 divisors (see below), whose sum is σ = 123694248960. Its totient is φ = 13600637760.

The previous prime is 51270830939. The next prime is 51270830983. The reversal of 51270830970 is 7903807215.

It is a super-2 number, since 2×512708309702 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4468165 + ... + 4479624.

It is an arithmetic number, because the mean of its divisors is an integer number (3865445280).

Almost surely, 251270830970 is an apocalyptic number.

51270830970 is an abundant number, since it is smaller than the sum of its proper divisors (72423417990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51270830970 is a wasteful number, since it uses less digits than its factorization.

51270830970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8947990.

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 51270830970 in words is "fifty-one billion, two hundred seventy million, eight hundred thirty thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 191 382 573 955 1146 1910 2865 5730 8947789 17895578 26843367 44738945 53686734 89477890 134216835 268433670 1709027699 3418055398 5127083097 8545138495 10254166194 17090276990 25635415485 51270830970