Search a number
-
+
20770312812250 = 253131627631187
BaseRepresentation
bin1001011100011111101110…
…00111011111011011011010
32201112121210210220212000011
410232033313013133123122
510210300100034443000
6112101425555032134
74242414466626061
oct456176707373332
981477723825004
1020770312812250
116688705113221
1223b551389b64a
13b7882a930a11
1451b4079251d8
1526043bc3e2ba
hex12e3f71df6da

20770312812250 has 32 divisors (see below), whose sum is σ = 38882382581952. Its totient is φ = 8308048843600.

The previous prime is 20770312812199. The next prime is 20770312812283. The reversal of 20770312812250 is 5221821307702.

It is a super-4 number, since 4×207703128122504 (a number of 54 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32591157 + ... + 33222343.

It is an arithmetic number, because the mean of its divisors is an integer number (1215074455686).

Almost surely, 220770312812250 is an apocalyptic number.

20770312812250 is a deficient number, since it is larger than the sum of its proper divisors (18112069769702).

20770312812250 is a wasteful number, since it uses less digits than its factorization.

20770312812250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762831 (or 762821 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 20770312812250 in words is "twenty trillion, seven hundred seventy billion, three hundred twelve million, eight hundred twelve thousand, two hundred fifty".

Divisors: 1 2 5 10 25 50 125 250 131627 263254 631187 658135 1262374 1316270 3155935 3290675 6311870 6581350 15779675 16453375 31559350 32906750 78898375 157796750 83081251249 166162502498 415406256245 830812512490 2077031281225 4154062562450 10385156406125 20770312812250