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20120945295 = 3511121945123
BaseRepresentation
bin10010101111010011…
…010100001010001111
31220221021002221000010
4102233103110022033
5312201430222140
613124325404303
71311421133043
oct225723241217
956837087003
1020120945295
118595827010
123a96569693
131b88772bb9
14d8c3aa023
157cb6ab880
hex4af4d428f

20120945295 has 16 divisors (see below), whose sum is σ = 35120195712. Its totient is φ = 9755609760.

The previous prime is 20120945279. The next prime is 20120945297. The reversal of 20120945295 is 59254902102.

It is not a de Polignac number, because 20120945295 - 24 = 20120945279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120945297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60972397 + ... + 60972726.

It is an arithmetic number, because the mean of its divisors is an integer number (2195012232).

Almost surely, 220120945295 is an apocalyptic number.

20120945295 is a deficient number, since it is larger than the sum of its proper divisors (14999250417).

20120945295 is a wasteful number, since it uses less digits than its factorization.

20120945295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121945142.

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 20120945295 in words is "twenty billion, one hundred twenty million, nine hundred forty-five thousand, two hundred ninety-five".

Divisors: 1 3 5 11 15 33 55 165 121945123 365835369 609725615 1341396353 1829176845 4024189059 6706981765 20120945295