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420065751212 = 221951487107351
BaseRepresentation
bin1100001110011011101…
…11101011000010101100
31111011021002211010221122
412013031313223002230
523340243313014322
6520550414520112
742230422654262
oct6071567530254
91434232733848
10420065751212
11152170190268
12694b3206038
13307c5827903
141648d0c2432
15add8301442
hex61cddeb0ac

420065751212 has 24 divisors (see below), whose sum is σ = 773827568640. Its totient is φ = 198972795600.

The previous prime is 420065751211. The next prime is 420065751233. The reversal of 420065751212 is 212157560024.

It is not an unprimeable number, because it can be changed into a prime (420065751211) 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, 3859337 + ... + 3966687.

It is an arithmetic number, because the mean of its divisors is an integer number (32242815360).

Almost surely, 2420065751212 is an apocalyptic number.

It is an amenable number.

420065751212 is a deficient number, since it is larger than the sum of its proper divisors (353761817428).

420065751212 is a wasteful number, since it uses less digits than its factorization.

420065751212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158861 (or 158859 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 420065751212 in words is "four hundred twenty billion, sixty-five million, seven hundred fifty-one thousand, two hundred twelve".

Divisors: 1 2 4 19 38 76 51487 102974 107351 205948 214702 429404 978253 1956506 2039669 3913012 4079338 8158676 5527180937 11054361874 22108723748 105016437803 210032875606 420065751212