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47997879974 = 2112909121817
BaseRepresentation
bin101100101100111001…
…011000011010100110
311120220001110221021022
4230230321120122212
51241244424124344
634014441051142
73316301151062
oct545471303246
9146801427238
1047997879974
11193a0608700
129376486ab2
1346ac032715
142474882aa2
1513adc140ee
hexb2ce586a6

47997879974 has 24 divisors (see below), whose sum is σ = 79149333144. Its totient is φ = 21813818400.

The previous prime is 47997879967. The next prime is 47997879977.

47997879974 is nontrivially palindromic in base 10.

47997879974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47997879977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2189114 + ... + 2210930.

It is an arithmetic number, because the mean of its divisors is an integer number (3297888881).

Almost surely, 247997879974 is an apocalyptic number.

47997879974 is a deficient number, since it is larger than the sum of its proper divisors (31151453170).

47997879974 is a wasteful number, since it uses less digits than its factorization.

47997879974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30932 (or 30921 counting only the distinct ones).

The product of its digits is 2016379008, while the sum is 80.

The spelling of 47997879974 in words is "forty-seven billion, nine hundred ninety-seven million, eight hundred seventy-nine thousand, nine hundred seventy-four".

Divisors: 1 2 11 22 121 242 9091 18182 21817 43634 100001 200002 239987 479974 1100011 2200022 2639857 5279714 198338347 396676694 2181721817 4363443634 23998939987 47997879974