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53909806774 = 289456166403
BaseRepresentation
bin110010001101010001…
…100101111010110110
312011011001210221020011
4302031101211322312
51340401402304044
640433230130434
73615635540215
oct621521457266
9164131727204
1053909806774
112095475381a
12a546350a1a
135111aa2565
142875ac707c
151607c51134
hexc8d465eb6

53909806774 has 16 divisors (see below), whose sum is σ = 81792462960. Its totient is φ = 26645794560.

The previous prime is 53909806759. The next prime is 53909806787. The reversal of 53909806774 is 47760890935.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778657 + ... + 845059.

It is an arithmetic number, because the mean of its divisors is an integer number (5112028935).

Almost surely, 253909806774 is an apocalyptic number.

53909806774 is a deficient number, since it is larger than the sum of its proper divisors (27882656186).

53909806774 is a wasteful number, since it uses less digits than its factorization.

53909806774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71055.

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 53909806774 in words is "fifty-three billion, nine hundred nine million, eight hundred six thousand, seven hundred seventy-four".

Divisors: 1 2 89 178 4561 9122 66403 132806 405929 811858 5909867 11819734 302864083 605728166 26954903387 53909806774