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51270246988 = 2219674608513
BaseRepresentation
bin101111101111111100…
…011110001001001100
311220100010000101220121
4233233330132021030
51320000140400423
635315255154324
73463344623512
oct575774361114
9156303011817
1051270246988
111a81a799454
129b2a3759a4
134ab0c8b26c
1426a53084b2
15150115945d
hexbeff1e24c

51270246988 has 12 divisors (see below), whose sum is σ = 94445191960. Its totient is φ = 24285906432.

The previous prime is 51270246967. The next prime is 51270246991. The reversal of 51270246988 is 88964207215.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337304181 + ... + 337304332.

Almost surely, 251270246988 is an apocalyptic number.

It is an amenable number.

51270246988 is a deficient number, since it is larger than the sum of its proper divisors (43174944972).

51270246988 is a wasteful number, since it uses less digits than its factorization.

51270246988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674608536 (or 674608534 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 51270246988 in words is "fifty-one billion, two hundred seventy million, two hundred forty-six thousand, nine hundred eighty-eight".

Divisors: 1 2 4 19 38 76 674608513 1349217026 2698434052 12817561747 25635123494 51270246988