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51260355942 = 2322737636091
BaseRepresentation
bin101111101111010110…
…101111010101100110
311220022102101212221120
4233233112233111212
51314440122342232
635314303154410
73463164556605
oct575726572546
9156272355846
1051260355942
111a815153134
129b26ba5a06
134aabc07183
1426a3c91a3c
15150035392c
hexbef5af566

51260355942 has 16 divisors (see below), whose sum is σ = 102972347712. Its totient is φ = 17011512680.

The previous prime is 51260355889. The next prime is 51260355953. The reversal of 51260355942 is 24955306215.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51260355894 and 51260355903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18816684 + ... + 18819407.

It is an arithmetic number, because the mean of its divisors is an integer number (6435771732).

Almost surely, 251260355942 is an apocalyptic number.

51260355942 is an abundant number, since it is smaller than the sum of its proper divisors (51711991770).

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

51260355942 is a wasteful number, since it uses less digits than its factorization.

51260355942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37636323.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 51260355942 in words is "fifty-one billion, two hundred sixty million, three hundred fifty-five thousand, nine hundred forty-two".

Divisors: 1 2 3 6 227 454 681 1362 37636091 75272182 112908273 225816546 8543392657 17086785314 25630177971 51260355942