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47998539980 = 22511172148547
BaseRepresentation
bin101100101100111011…
…111001100011001100
311120220002201110121222
4230230323321203030
51241300111234410
634014503142512
73316306600226
oct545473714314
9146802643558
1047998539980
11193a0a19566
129376744a38
1346ac203c61
1424749b5416
1513adce4955
hexb2cef98cc

47998539980 has 24 divisors (see below), whose sum is σ = 100887219888. Its totient is φ = 19182218688.

The previous prime is 47998539961. The next prime is 47998539983. The reversal of 47998539980 is 8993589974.

It is not an unprimeable number, because it can be changed into a prime (47998539983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1051934 + ... + 1096613.

It is an arithmetic number, because the mean of its divisors is an integer number (4203634162).

Almost surely, 247998539980 is an apocalyptic number.

It is an amenable number.

47998539980 is an abundant number, since it is smaller than the sum of its proper divisors (52888679908).

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

47998539980 is a wasteful number, since it uses less digits than its factorization.

47998539980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149673 (or 2149671 counting only the distinct ones).

The product of its (nonzero) digits is 176359680, while the sum is 71.

The spelling of 47998539980 in words is "forty-seven billion, nine hundred ninety-eight million, five hundred thirty-nine thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 1117 2234 4468 5585 11170 22340 2148547 4297094 8594188 10742735 21485470 42970940 2399926999 4799853998 9599707996 11999634995 23999269990 47998539980